Move content/components/navigation_interception to src/components

BUG=169312

Review URL: https://chromiumcodereview.appspot.com/11830043

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@178238 0039d316-1c4b-4281-b951-d872f2087c98

16 files changed, 1021 insertions, 14 deletions

diff --git a/components/DEPS b/components/DEPS
index eb8bee4..d6fbc7c 100644
--- a/components/DEPS
+++ b/components/DEPS
@@ -13,5 +13,4 @@ include_rules = [
   # "+content/public/browser" rule.
   "-content",
   "+content/public/common",
-  "+content/public/test",
 ]
diff --git a/components/components.gyp b/components/components.gyp
index a55fe44..eea034a 100644
--- a/components/components.gyp
+++ b/components/components.gyp
@@ -6,6 +6,7 @@
   'includes': [
     'auto_login_parser.gypi',
     'components_tests.gypi',
+    'navigation_interception.gypi',
     'visitedlink.gypi',
     'web_contents_delegate_android.gypi',
   ],
diff --git a/components/components_tests.gypi b/components/components_tests.gypi
index 537a8c0..ef40684 100644
--- a/components/components_tests.gypi
+++ b/components/components_tests.gypi
@@ -3,17 +3,31 @@
 # found in the LICENSE file.
 
 {
-  'targets': [
-    {
-      'target_name': 'components_unittests',
-      'type': '<(gtest_target_type)',
-      'sources': [
-        'test/run_all_unittests.cc',
-      ],
-      'dependencies': [
-        '../base/base.gyp:test_support_base',
-        '../testing/gtest.gyp:gtest',
+  'conditions': [
+    ['OS != "ios"', {
+      'targets': [
+        {
+          'target_name': 'components_unittests',
+          'type': '<(gtest_target_type)',
+          'sources': [
+            'navigation_interception/intercept_navigation_resource_throttle_unittest.cc',
+            'test/run_all_unittests.cc',
+          ],
+          'include_dirs': [
+            '..',
+          ],
+          'dependencies': [
+            '../base/base.gyp:test_support_base',
+            '../testing/gmock.gyp:gmock',
+            '../testing/gtest.gyp:gtest',
+
+            # Dependencies of intercept_navigation_resource_throttle_unittest.cc
+            '../content/content.gyp:test_support_content',
+            '../skia/skia.gyp:skia',
+            'navigation_interception',
+          ],
+        }
       ],
-    }
-  ]
+    }],
+  ],
 }
diff --git a/components/navigation_interception.gypi b/components/navigation_interception.gypi
new file mode 100644
index 0000000..4912929
--- /dev/null
+++ b/components/navigation_interception.gypi
@@ -0,0 +1,76 @@
+# Copyright (c) 2012 The Chromium Authors. All rights reserved.
+#
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+{
+  'conditions': [
+    ['OS != "ios"', {
+      'targets': [
+        {
+          'target_name': 'navigation_interception',
+          'type': 'static_library',
+          'defines!': ['CONTENT_IMPLEMENTATION'],
+          'dependencies': [
+            '../base/base.gyp:base',
+            '../content/content.gyp:content_browser',
+            '../content/content.gyp:content_common',
+            '../net/net.gyp:net',
+          ],
+          'include_dirs': [
+            '..',
+            '../skia/config',
+            '<(SHARED_INTERMEDIATE_DIR)/navigation_interception',
+
+          ],
+          'sources': [
+            'navigation_interception/intercept_navigation_resource_throttle.cc',
+            'navigation_interception/intercept_navigation_resource_throttle.h',
+          ],
+          'conditions': [
+            ['OS=="android"', {
+              'dependencies': [
+                  'navigation_interception_jni_headers',
+              ],
+              'sources': [
+                'navigation_interception/component_jni_registrar.cc',
+                'navigation_interception/component_jni_registrar.h',
+                'navigation_interception/intercept_navigation_delegate.cc',
+                'navigation_interception/intercept_navigation_delegate.h',
+              ],
+            }],
+          ],
+        },
+      ],
+      'conditions': [
+        ['OS=="android"', {
+          'targets': [
+            {
+              'target_name': 'navigation_interception_java',
+              'type': 'none',
+              'dependencies': [
+                '../base/base.gyp:base',
+              ],
+              'variables': {
+                'package_name': 'navigation_interception',
+                'java_in_dir': 'navigation_interception/android/java',
+              },
+              'includes': [ '../build/java.gypi' ],
+            },
+            {
+              'target_name': 'navigation_interception_jni_headers',
+              'type': 'none',
+              'sources': [
+                'navigation_interception/android/java/src/org/chromium/content/components/navigation_interception/InterceptNavigationDelegate.java',
+              ],
+              'variables': {
+                'jni_gen_dir': 'navigation_interception',
+              },
+              'includes': [ '../build/jni_generator.gypi' ],
+            },
+          ],
+        }],
+      ],
+    }],
+  ],
+}
diff --git a/components/navigation_interception/DEPS b/components/navigation_interception/DEPS
new file mode 100644
index 0000000..cee4d3e
--- /dev/null
+++ b/components/navigation_interception/DEPS
@@ -0,0 +1,8 @@
+include_rules = [
+  "+jni",
+  "+net",
+
+  "+content/public/browser",
+  "+content/public/common",
+  "+content/public/test",
+]
diff --git a/components/navigation_interception/OWNERS b/components/navigation_interception/OWNERS
new file mode 100644
index 0000000..d7b0401
--- /dev/null
+++ b/components/navigation_interception/OWNERS
@@ -0,0 +1,3 @@
+jknotten@chromium.org
+joth@chromium.org
+mkosiba@chromium.org
diff --git a/components/navigation_interception/android/java/src/org/chromium/content/components/navigation_interception/InterceptNavigationDelegate.java b/components/navigation_interception/android/java/src/org/chromium/content/components/navigation_interception/InterceptNavigationDelegate.java
new file mode 100644
index 0000000..4f3938e
--- /dev/null
+++ b/components/navigation_interception/android/java/src/org/chromium/content/components/navigation_interception/InterceptNavigationDelegate.java
@@ -0,0 +1,24 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package org.chromium.components.navigation_interception;
+
+import org.chromium.base.CalledByNative;
+
+public interface InterceptNavigationDelegate {
+    /**
+     * This method is called for every top-level navigation within the associated WebContents.
+     * The method allows the embedder to ignore navigations. This is used on Android to 'convert'
+     * certain navigations to Intents to 3rd party applications.
+     *
+     * @param url the target url of the navigation.
+     * @param isPost true if the the navigation method is "POST".
+     * @param isUserGesture true if the navigation was initiated by the user.
+     * @param pageTransition is the page transition type (e.g. link / typed).
+     * @return true if the navigation should be ignored.
+     */
+    @CalledByNative
+    boolean shouldIgnoreNavigation(String url, boolean isPost, boolean isUserGesture,
+                                   int pageTransition);
+}
diff --git a/components/navigation_interception/component_jni_registrar.cc b/components/navigation_interception/component_jni_registrar.cc
new file mode 100644
index 0000000..9d2c30e
--- /dev/null
+++ b/components/navigation_interception/component_jni_registrar.cc
@@ -0,0 +1,22 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "components/navigation_interception/component_jni_registrar.h"
+
+#include "base/android/jni_android.h"
+#include "base/android/jni_registrar.h"
+#include "components/navigation_interception/intercept_navigation_delegate.h"
+
+namespace components {
+
+static base::android::RegistrationMethod kComponentRegisteredMethods[] = {
+  { "InterceptNavigationDelegate", RegisterInterceptNavigationDelegate },
+};
+
+bool RegisterNavigationInterceptionJni(JNIEnv* env) {
+  return RegisterNativeMethods(env,
+      kComponentRegisteredMethods, arraysize(kComponentRegisteredMethods));
+}
+
+}  // namespace components
diff --git a/components/navigation_interception/component_jni_registrar.h b/components/navigation_interception/component_jni_registrar.h
new file mode 100644
index 0000000..ada59b2
--- /dev/null
+++ b/components/navigation_interception/component_jni_registrar.h
@@ -0,0 +1,18 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef COMPONENTS_NAVIGATION_INTERCEPTION_COMPONENT_JNI_REGISTRAR_H_
+#define COMPONENTS_NAVIGATION_INTERCEPTION_COMPONENT_JNI_REGISTRAR_H_
+
+#include <jni.h>
+
+namespace components {
+
+// Register all JNI bindings necessary for the navigation_interception
+// component.
+bool RegisterNavigationInterceptionJni(JNIEnv* env);
+
+}  // namespace components
+
+#endif  // COMPONENTS_NAVIGATION_INTERCEPTION_COMPONENT_JNI_REGISTRAR_H_
diff --git a/components/navigation_interception/intercept_navigation_delegate.cc b/components/navigation_interception/intercept_navigation_delegate.cc
new file mode 100644
index 0000000..a0cbc86
--- /dev/null
+++ b/components/navigation_interception/intercept_navigation_delegate.cc
@@ -0,0 +1,116 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "components/navigation_interception/intercept_navigation_delegate.h"
+
+#include "base/android/jni_android.h"
+#include "base/android/jni_string.h"
+#include "base/callback.h"
+#include "components/navigation_interception/intercept_navigation_resource_throttle.h"
+#include "content/public/browser/browser_thread.h"
+#include "content/public/browser/render_view_host.h"
+#include "content/public/browser/web_contents.h"
+#include "googleurl/src/gurl.h"
+#include "jni/InterceptNavigationDelegate_jni.h"
+#include "net/url_request/url_request.h"
+
+using base::android::ConvertUTF8ToJavaString;
+using base::android::ScopedJavaLocalRef;
+using content::BrowserThread;
+using content::PageTransition;
+using content::RenderViewHost;
+using content::WebContents;
+
+namespace components {
+
+namespace {
+
+const void* kInterceptNavigationDelegateUserDataKey =
+    &kInterceptNavigationDelegateUserDataKey;
+
+bool CheckIfShouldIgnoreNavigationOnUIThread(RenderViewHost* source,
+                                             const GURL& url,
+                                             const content::Referrer& referrer,
+                                             bool is_post,
+                                             bool has_user_gesture,
+                                             PageTransition transition_type) {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  DCHECK(source);
+
+  WebContents* web_contents = WebContents::FromRenderViewHost(source);
+  if (!web_contents)
+    return false;
+  InterceptNavigationDelegate* intercept_navigation_delegate =
+      InterceptNavigationDelegate::Get(web_contents);
+  if (!intercept_navigation_delegate)
+    return false;
+
+  return intercept_navigation_delegate->ShouldIgnoreNavigation(
+      url, is_post, has_user_gesture, transition_type);
+}
+
+} // namespace
+
+// static
+void InterceptNavigationDelegate::Associate(
+    WebContents* web_contents,
+    scoped_ptr<InterceptNavigationDelegate> delegate) {
+  web_contents->SetUserData(kInterceptNavigationDelegateUserDataKey,
+                            delegate.release());
+}
+
+// static
+InterceptNavigationDelegate* InterceptNavigationDelegate::Get(
+    WebContents* web_contents) {
+  return reinterpret_cast<InterceptNavigationDelegate*>(
+      web_contents->GetUserData(kInterceptNavigationDelegateUserDataKey));
+}
+
+// static
+content::ResourceThrottle* InterceptNavigationDelegate::CreateThrottleFor(
+    net::URLRequest* request) {
+  return new InterceptNavigationResourceThrottle(
+      request, base::Bind(&CheckIfShouldIgnoreNavigationOnUIThread));
+}
+
+InterceptNavigationDelegate::InterceptNavigationDelegate(
+    JNIEnv* env, jobject jdelegate)
+    : weak_jdelegate_(env, jdelegate) {
+}
+
+InterceptNavigationDelegate::~InterceptNavigationDelegate() {
+}
+
+bool InterceptNavigationDelegate::ShouldIgnoreNavigation(
+    const GURL& url,
+    bool is_post,
+    bool has_user_gesture,
+    PageTransition transition_type) {
+  if (!url.is_valid())
+    return false;
+
+  JNIEnv* env = base::android::AttachCurrentThread();
+  ScopedJavaLocalRef<jobject> jdelegate = weak_jdelegate_.get(env);
+
+  if (jdelegate.is_null())
+    return false;
+
+  ScopedJavaLocalRef<jstring> jstring_url =
+      ConvertUTF8ToJavaString(env, url.spec());
+  return Java_InterceptNavigationDelegate_shouldIgnoreNavigation(
+      env,
+      jdelegate.obj(),
+      jstring_url.obj(),
+      is_post,
+      has_user_gesture,
+      transition_type);
+}
+
+// Register native methods.
+
+bool RegisterInterceptNavigationDelegate(JNIEnv* env) {
+  return RegisterNativesImpl(env);
+}
+
+}  // namespace components
diff --git a/components/navigation_interception/intercept_navigation_delegate.h b/components/navigation_interception/intercept_navigation_delegate.h
new file mode 100644
index 0000000..66a2518
--- /dev/null
+++ b/components/navigation_interception/intercept_navigation_delegate.h
@@ -0,0 +1,69 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef COMPONENTS_NAVIGATION_INTERCEPTION_INTERCEPT_NAVIGATION_DELEGATE_H_
+#define COMPONENTS_NAVIGATION_INTERCEPTION_INTERCEPT_NAVIGATION_DELEGATE_H_
+
+#include "base/android/jni_helper.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/supports_user_data.h"
+#include "content/public/common/page_transition_types.h"
+
+class GURL;
+
+namespace content {
+class ResourceThrottle;
+class WebContents;
+}
+
+namespace net {
+class URLRequest;
+}
+
+namespace components {
+
+// Native side of the InterceptNavigationDelegate Java interface.
+// This is used to create a InterceptNavigationResourceThrottle that calls the
+// Java interface method to determine whether a navigation should be ignored or
+// not.
+// To us this class:
+// 1) the Java-side interface implementation must be associated (via the
+//    Associate method) with a WebContents for which URLRequests are to be
+//    intercepted,
+// 2) the ResourceThrottle obtained via CreateThrottleFor must be associated
+//    with the URLRequests in the ResourceDispatcherHostDelegate
+//    implementation.
+class InterceptNavigationDelegate : public base::SupportsUserData::Data {
+ public:
+  InterceptNavigationDelegate(JNIEnv* env, jobject jdelegate);
+  virtual ~InterceptNavigationDelegate();
+
+  // Associates the InterceptNavigationDelegate with a WebContents using the
+  // SupportsUserData mechanism.
+  // As implied by the use of scoped_ptr, the WebContents will assume ownership
+  // of |delegate|.
+  static void Associate(content::WebContents* web_contents,
+                        scoped_ptr<InterceptNavigationDelegate> delegate);
+  // Gets the InterceptNavigationDelegate associated with the WebContents,
+  // can be null.
+  static InterceptNavigationDelegate* Get(content::WebContents* web_contents);
+
+  // Creates a InterceptNavigationResourceThrottle that will direct all
+  // callbacks to the InterceptNavigationDelegate.
+  static content::ResourceThrottle* CreateThrottleFor(
+      net::URLRequest* request);
+
+  virtual bool ShouldIgnoreNavigation(const GURL& url,
+                                      bool is_post,
+                                      bool has_user_gesture,
+                                      content::PageTransition transition_type);
+ private:
+  JavaObjectWeakGlobalRef weak_jdelegate_;
+};
+
+bool RegisterInterceptNavigationDelegate(JNIEnv* env);
+
+}  // namespace components
+
+#endif  // COMPONENTS_NAVIGATION_INTERCEPTION_INTERCEPT_NAVIGATION_DELEGATE_H_
diff --git a/components/navigation_interception/intercept_navigation_resource_throttle.cc b/components/navigation_interception/intercept_navigation_resource_throttle.cc
new file mode 100644
index 0000000..5f7c090
--- /dev/null
+++ b/components/navigation_interception/intercept_navigation_resource_throttle.cc
@@ -0,0 +1,138 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "components/navigation_interception/intercept_navigation_resource_throttle.h"
+
+#include "content/public/browser/browser_thread.h"
+#include "content/public/browser/child_process_security_policy.h"
+#include "content/public/browser/render_process_host.h"
+#include "content/public/browser/render_view_host.h"
+#include "content/public/browser/resource_controller.h"
+#include "content/public/browser/resource_request_info.h"
+#include "content/public/common/page_transition_types.h"
+#include "content/public/common/referrer.h"
+#include "net/url_request/url_request.h"
+
+using content::BrowserThread;
+using content::ChildProcessSecurityPolicy;
+using content::PageTransition;
+using content::Referrer;
+using content::RenderViewHost;
+using content::ResourceRequestInfo;
+
+namespace components {
+
+namespace {
+
+struct ShouldIgnoreCallbackParams {
+  int render_process_id;
+  int render_view_id;
+  GURL url;
+  Referrer referrer;
+  bool has_user_gesture;
+  bool is_post;
+  PageTransition transition_type;
+};
+
+void CheckIfShouldIgnoreNavigationOnUIThread(
+    const ShouldIgnoreCallbackParams& params,
+    InterceptNavigationResourceThrottle::CheckOnUIThreadCallback
+    should_ignore_callback,
+    base::Callback<void(bool)> callback) {
+
+  bool should_ignore_navigation = false;
+  RenderViewHost* rvh =
+      RenderViewHost::FromID(params.render_process_id, params.render_view_id);
+
+  if (rvh) {
+    GURL validated_url(params.url);
+    RenderViewHost::FilterURL(rvh->GetProcess(), false, &validated_url);
+
+    should_ignore_navigation = should_ignore_callback.Run(
+        rvh,
+        validated_url,
+        params.referrer,
+        params.is_post,
+        params.has_user_gesture,
+        params.transition_type);
+  }
+
+  BrowserThread::PostTask(
+      BrowserThread::IO,
+      FROM_HERE,
+      base::Bind(callback, should_ignore_navigation));
+}
+
+} // namespace
+
+InterceptNavigationResourceThrottle::InterceptNavigationResourceThrottle(
+    net::URLRequest* request,
+    CheckOnUIThreadCallback should_ignore_callback)
+    : request_(request),
+      should_ignore_callback_(should_ignore_callback),
+      weak_ptr_factory_(ALLOW_THIS_IN_INITIALIZER_LIST(this)) {
+}
+
+InterceptNavigationResourceThrottle::~InterceptNavigationResourceThrottle() {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
+}
+
+void InterceptNavigationResourceThrottle::WillStartRequest(bool* defer) {
+  *defer = CheckIfShouldIgnoreNavigation(request_->url());
+}
+
+void InterceptNavigationResourceThrottle::WillRedirectRequest(
+    const GURL& new_url,
+    bool* defer) {
+  *defer = CheckIfShouldIgnoreNavigation(new_url);
+}
+
+bool InterceptNavigationResourceThrottle::CheckIfShouldIgnoreNavigation(
+    const GURL& url) {
+  const ResourceRequestInfo* info = ResourceRequestInfo::ForRequest(request_);
+  if (!info)
+    return false;
+
+  int render_process_id, render_view_id;
+  if (!info->GetAssociatedRenderView(&render_process_id, &render_view_id))
+    return false;
+
+  ShouldIgnoreCallbackParams params;
+  params.render_process_id = render_process_id;
+  params.render_view_id = render_view_id;
+  params.url = url;
+  params.referrer = Referrer(GURL(request_->referrer()),
+                             info->GetReferrerPolicy());
+  params.has_user_gesture = info->HasUserGesture();
+  params.is_post = request_->method() == "POST";
+  params.transition_type = info->GetPageTransition();
+
+  BrowserThread::PostTask(
+      BrowserThread::UI,
+      FROM_HERE,
+      base::Bind(
+          &CheckIfShouldIgnoreNavigationOnUIThread,
+          params,
+          should_ignore_callback_,
+          base::Bind(
+              &InterceptNavigationResourceThrottle::OnResultObtained,
+              weak_ptr_factory_.GetWeakPtr())));
+
+  // Defer request while we wait for the UI thread to check if the navigation
+  // should be ignored.
+  return true;
+}
+
+void InterceptNavigationResourceThrottle::OnResultObtained(
+    bool should_ignore_navigation) {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
+
+  if (should_ignore_navigation) {
+    controller()->CancelAndIgnore();
+  } else {
+    controller()->Resume();
+  }
+}
+
+}  // namespace components
diff --git a/components/navigation_interception/intercept_navigation_resource_throttle.h b/components/navigation_interception/intercept_navigation_resource_throttle.h
new file mode 100644
index 0000000..7bfe6fa
--- /dev/null
+++ b/components/navigation_interception/intercept_navigation_resource_throttle.h
@@ -0,0 +1,63 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef COMPONENTS_NAVIGATION_INTERCEPTION_INTERCEPT_NAVIGATION_RESOURCE_THROTTLE_H_
+#define COMPONENTS_NAVIGATION_INTERCEPTION_INTERCEPT_NAVIGATION_RESOURCE_THROTTLE_H_
+
+#include <string>
+
+#include "base/callback.h"
+#include "base/memory/weak_ptr.h"
+#include "content/public/browser/resource_throttle.h"
+#include "content/public/common/page_transition_types.h"
+
+class GURL;
+
+namespace content {
+class RenderViewHost;
+struct Referrer;
+}
+
+namespace net {
+class URLRequest;
+}
+
+namespace components {
+
+// This class allows the provider of the Callback to selectively ignore top
+// level navigations.
+class InterceptNavigationResourceThrottle : public content::ResourceThrottle {
+ public:
+  typedef base::Callback<
+      bool(content::RenderViewHost* /* source */,
+           const GURL& /* url */,
+           const content::Referrer& /*referrer*/,
+           bool /* is_post */,
+           bool /* has_user_gesture */,
+           content::PageTransition /* page transition type */)>
+      CheckOnUIThreadCallback;
+
+  InterceptNavigationResourceThrottle(
+      net::URLRequest* request,
+      CheckOnUIThreadCallback should_ignore_callback);
+  virtual ~InterceptNavigationResourceThrottle();
+
+  // content::ResourceThrottle implementation:
+  virtual void WillStartRequest(bool* defer) OVERRIDE;
+  virtual void WillRedirectRequest(const GURL& new_url, bool* defer) OVERRIDE;
+
+ private:
+  bool CheckIfShouldIgnoreNavigation(const GURL& url);
+  void OnResultObtained(bool should_ignore_navigation);
+
+  net::URLRequest* request_;
+  CheckOnUIThreadCallback should_ignore_callback_;
+  base::WeakPtrFactory<InterceptNavigationResourceThrottle> weak_ptr_factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(InterceptNavigationResourceThrottle);
+};
+
+}  // namespace components
+
+#endif  // COMPONENTS_NAVIGATION_INTERCEPTION_INTERCEPT_NAVIGATION_RESOURCE_THROTTLE_H_
diff --git a/components/navigation_interception/intercept_navigation_resource_throttle_unittest.cc b/components/navigation_interception/intercept_navigation_resource_throttle_unittest.cc
new file mode 100644
index 0000000..8d9943c
--- /dev/null
+++ b/components/navigation_interception/intercept_navigation_resource_throttle_unittest.cc
@@ -0,0 +1,414 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "base/bind.h"
+#include "base/bind_helpers.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/memory/scoped_vector.h"
+#include "base/synchronization/waitable_event.h"
+#include "components/navigation_interception/intercept_navigation_resource_throttle.h"
+#include "content/public/browser/render_process_host.h"
+#include "content/public/browser/resource_context.h"
+#include "content/public/browser/resource_controller.h"
+#include "content/public/browser/resource_dispatcher_host.h"
+#include "content/public/browser/resource_dispatcher_host_delegate.h"
+#include "content/public/browser/resource_request_info.h"
+#include "content/public/browser/resource_throttle.h"
+#include "content/public/browser/web_contents.h"
+#include "content/public/browser/web_contents_delegate.h"
+#include "content/public/common/page_transition_types.h"
+#include "content/public/test/mock_resource_context.h"
+#include "content/public/test/test_browser_thread.h"
+#include "content/public/test/test_renderer_host.h"
+#include "net/url_request/url_request.h"
+#include "testing/gmock/include/gmock/gmock.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+using testing::_;
+using testing::Eq;
+using testing::Ne;
+using testing::Return;
+
+namespace components {
+
+namespace {
+
+const char kTestUrl[] = "http://www.test.com/";
+const char kUnsafeTestUrl[] = "about:crash";
+
+void ContinueTestCase() {
+  content::BrowserThread::PostTask(
+      content::BrowserThread::UI, FROM_HERE, MessageLoop::QuitClosure());
+}
+
+} // namespace
+
+// MockInterceptCallbackReceiver ----------------------------------------------
+
+class MockInterceptCallbackReceiver {
+ public:
+  MOCK_METHOD6(ShouldIgnoreNavigation,
+               bool(content::RenderViewHost* source,
+                    const GURL& url,
+                    const content::Referrer& referrer,
+                    bool is_post,
+                    bool has_user_gesture,
+                    content::PageTransition page_transition));
+};
+
+// MockResourceController -----------------------------------------------------
+class MockResourceController : public content::ResourceController {
+ public:
+  enum Status {
+    UNKNOWN,
+    RESUMED,
+    CANCELLED
+  };
+
+  MockResourceController()
+      : status_(UNKNOWN) {
+  }
+
+  Status status() const { return status_; }
+
+  // ResourceController:
+  virtual void Cancel() {
+    NOTREACHED();
+  }
+  virtual void CancelAndIgnore() {
+    status_ = CANCELLED;
+    ContinueTestCase();
+  }
+  virtual void CancelWithError(int error_code) {
+    NOTREACHED();
+  }
+  virtual void Resume() {
+    DCHECK(status_ == UNKNOWN);
+    status_ = RESUMED;
+    ContinueTestCase();
+  }
+
+ private:
+  Status status_;
+};
+
+// TestIOThreadState ----------------------------------------------------------
+
+class TestIOThreadState {
+ public:
+  TestIOThreadState(const GURL& url, int render_process_id, int render_view_id,
+                    const std::string& request_method,
+                    MockInterceptCallbackReceiver* callback_receiver)
+      : request_(url, NULL, resource_context_.GetRequestContext()),
+        throttle_(NULL) {
+      DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::IO));
+      if (render_process_id != MSG_ROUTING_NONE &&
+          render_view_id != MSG_ROUTING_NONE) {
+        content::ResourceRequestInfo::AllocateForTesting(
+            &request_,
+            ResourceType::MAIN_FRAME,
+            &resource_context_,
+            render_process_id,
+            render_view_id);
+      }
+      throttle_.reset(new InterceptNavigationResourceThrottle(
+          &request_,
+          base::Bind(&MockInterceptCallbackReceiver::ShouldIgnoreNavigation,
+                     base::Unretained(callback_receiver))));
+      throttle_->set_controller_for_testing(&throttle_controller_);
+      request_.set_method(request_method);
+  }
+
+  void ThrottleWillStartRequest(bool* defer) {
+    DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::IO));
+    throttle_->WillStartRequest(defer);
+  }
+
+  bool request_resumed() const {
+    return throttle_controller_.status() ==
+        MockResourceController::RESUMED;
+  }
+
+  bool request_cancelled() const {
+    return throttle_controller_.status() ==
+        MockResourceController::CANCELLED;
+  }
+
+ private:
+  content::MockResourceContext resource_context_;
+  net::URLRequest request_;
+  scoped_ptr<InterceptNavigationResourceThrottle> throttle_;
+  MockResourceController throttle_controller_;
+};
+
+// InterceptNavigationResourceThrottleTest ------------------------------------
+
+class InterceptNavigationResourceThrottleTest
+  : public content::RenderViewHostTestHarness {
+ public:
+  InterceptNavigationResourceThrottleTest()
+      : mock_callback_receiver_(new MockInterceptCallbackReceiver()),
+        ui_thread_(content::BrowserThread::UI, &message_loop_),
+        io_thread_(content::BrowserThread::IO),
+        io_thread_state_(NULL) {
+  }
+
+  virtual void SetUp() OVERRIDE {
+    RenderViewHostTestHarness::SetUp();
+
+    io_thread_.StartIOThread();
+  }
+
+  virtual void TearDown() OVERRIDE {
+    if (web_contents())
+      web_contents()->SetDelegate(NULL);
+
+    content::BrowserThread::PostTask(
+        content::BrowserThread::IO,
+        FROM_HERE,
+        base::Bind(&base::DeletePointer<TestIOThreadState>, io_thread_state_));
+
+    RenderViewHostTestHarness::TearDown();
+  }
+
+  void SetIOThreadState(TestIOThreadState* io_thread_state) {
+    io_thread_state_ = io_thread_state;
+  }
+
+  void RunThrottleWillStartRequestOnIOThread(
+      const GURL& url,
+      const std::string& request_method,
+      int render_process_id,
+      int render_view_id,
+      bool* defer) {
+    DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::IO));
+    TestIOThreadState* io_thread_state =
+        new TestIOThreadState(url, render_process_id, render_view_id,
+                              request_method, mock_callback_receiver_.get());
+
+    SetIOThreadState(io_thread_state);
+    io_thread_state->ThrottleWillStartRequest(defer);
+
+    if (!*defer) {
+      ContinueTestCase();
+    }
+  }
+
+ protected:
+  enum ShouldIgnoreNavigationCallbackAction {
+    IgnoreNavigation,
+    DontIgnoreNavigation
+  };
+
+  void SetUpWebContentsDelegateAndRunMessageLoop(
+      ShouldIgnoreNavigationCallbackAction callback_action,
+      bool* defer) {
+
+    ON_CALL(*mock_callback_receiver_,
+            ShouldIgnoreNavigation(_, _, _, _, _, _))
+      .WillByDefault(Return(callback_action == IgnoreNavigation));
+    EXPECT_CALL(*mock_callback_receiver_,
+                ShouldIgnoreNavigation(rvh(), Eq(GURL(kTestUrl)), _, _, _, _))
+      .Times(1);
+
+    content::BrowserThread::PostTask(
+        content::BrowserThread::IO,
+        FROM_HERE,
+        base::Bind(
+            &InterceptNavigationResourceThrottleTest::
+                RunThrottleWillStartRequestOnIOThread,
+            base::Unretained(this),
+            GURL(kTestUrl),
+            "GET",
+            web_contents()->GetRenderViewHost()->GetProcess()->GetID(),
+            web_contents()->GetRenderViewHost()->GetRoutingID(),
+            base::Unretained(defer)));
+
+    // Wait for the request to finish processing.
+    message_loop_.Run();
+  }
+
+  void WaitForPreviouslyScheduledIoThreadWork() {
+    base::WaitableEvent io_thread_work_done(true, false);
+    content::BrowserThread::PostTask(
+        content::BrowserThread::IO,
+        FROM_HERE,
+        base::Bind(
+          &base::WaitableEvent::Signal,
+          base::Unretained(&io_thread_work_done)));
+    io_thread_work_done.Wait();
+  }
+
+  scoped_ptr<MockInterceptCallbackReceiver> mock_callback_receiver_;
+  content::TestBrowserThread ui_thread_;
+  content::TestBrowserThread io_thread_;
+  TestIOThreadState* io_thread_state_;
+};
+
+TEST_F(InterceptNavigationResourceThrottleTest,
+       RequestDeferredAndResumedIfNavigationNotIgnored) {
+  bool defer = false;
+  SetUpWebContentsDelegateAndRunMessageLoop(DontIgnoreNavigation, &defer);
+
+  EXPECT_TRUE(defer);
+  EXPECT_TRUE(io_thread_state_);
+  EXPECT_TRUE(io_thread_state_->request_resumed());
+}
+
+TEST_F(InterceptNavigationResourceThrottleTest,
+       RequestDeferredAndCancelledIfNavigationIgnored) {
+  bool defer = false;
+  SetUpWebContentsDelegateAndRunMessageLoop(IgnoreNavigation, &defer);
+
+  EXPECT_TRUE(defer);
+  EXPECT_TRUE(io_thread_state_);
+  EXPECT_TRUE(io_thread_state_->request_cancelled());
+}
+
+TEST_F(InterceptNavigationResourceThrottleTest,
+       NoCallbackMadeIfContentsDeletedWhileThrottleRunning) {
+  bool defer = false;
+
+  // The tested scenario is when the WebContents is deleted after the
+  // ResourceThrottle has finished processing on the IO thread but before the
+  // UI thread callback has been processed.
+  content::BrowserThread::PostTask(
+      content::BrowserThread::UI,
+      FROM_HERE,
+      base::Bind(
+          &RenderViewHostTestHarness::DeleteContents,
+          base::Unretained(this)));
+
+  EXPECT_CALL(*mock_callback_receiver_,
+              ShouldIgnoreNavigation(_, _, _, _, _, _))
+      .Times(0);
+
+  content::BrowserThread::PostTask(
+      content::BrowserThread::IO,
+      FROM_HERE,
+      base::Bind(
+          &InterceptNavigationResourceThrottleTest::
+          RunThrottleWillStartRequestOnIOThread,
+          base::Unretained(this),
+          GURL(kTestUrl),
+          "GET",
+          web_contents()->GetRenderViewHost()->GetProcess()->GetID(),
+          web_contents()->GetRenderViewHost()->GetRoutingID(),
+          base::Unretained(&defer)));
+
+  WaitForPreviouslyScheduledIoThreadWork();
+
+  // The WebContents will now be deleted and only after that will the UI-thread
+  // callback posted by the ResourceThrottle be executed.
+  message_loop_.Run();
+
+  EXPECT_TRUE(defer);
+  EXPECT_TRUE(io_thread_state_);
+  EXPECT_TRUE(io_thread_state_->request_resumed());
+}
+
+TEST_F(InterceptNavigationResourceThrottleTest,
+       RequestNotDeferredForRequestNotAssociatedWithARenderView) {
+  bool defer = false;
+
+  content::BrowserThread::PostTask(
+      content::BrowserThread::IO,
+      FROM_HERE,
+      base::Bind(
+          &InterceptNavigationResourceThrottleTest::
+              RunThrottleWillStartRequestOnIOThread,
+          base::Unretained(this),
+          GURL(kTestUrl),
+          "GET",
+          MSG_ROUTING_NONE,
+          MSG_ROUTING_NONE,
+          base::Unretained(&defer)));
+
+  // Wait for the request to finish processing.
+  message_loop_.Run();
+
+  EXPECT_FALSE(defer);
+}
+
+TEST_F(InterceptNavigationResourceThrottleTest,
+       CallbackCalledWithFilteredUrl) {
+  bool defer = false;
+
+  ON_CALL(*mock_callback_receiver_,
+          ShouldIgnoreNavigation(_, Ne(GURL(kUnsafeTestUrl)), _, _, _, _))
+      .WillByDefault(Return(false));
+  EXPECT_CALL(*mock_callback_receiver_,
+              ShouldIgnoreNavigation(_, Ne(GURL(kUnsafeTestUrl)), _, _, _, _))
+      .Times(1);
+
+  content::BrowserThread::PostTask(
+      content::BrowserThread::IO,
+      FROM_HERE,
+      base::Bind(
+          &InterceptNavigationResourceThrottleTest::
+              RunThrottleWillStartRequestOnIOThread,
+          base::Unretained(this),
+          GURL(kUnsafeTestUrl),
+          "GET",
+          web_contents()->GetRenderViewHost()->GetProcess()->GetID(),
+          web_contents()->GetRenderViewHost()->GetRoutingID(),
+          base::Unretained(&defer)));
+
+  // Wait for the request to finish processing.
+  message_loop_.Run();
+}
+
+TEST_F(InterceptNavigationResourceThrottleTest,
+       CallbackIsPostFalseForGet) {
+  bool defer = false;
+
+  EXPECT_CALL(*mock_callback_receiver_,
+              ShouldIgnoreNavigation(_, Ne(GURL(kUnsafeTestUrl)), _, false, _,
+                                     _))
+      .WillOnce(Return(false));
+
+  content::BrowserThread::PostTask(
+      content::BrowserThread::IO,
+      FROM_HERE,
+      base::Bind(
+          &InterceptNavigationResourceThrottleTest::
+              RunThrottleWillStartRequestOnIOThread,
+          base::Unretained(this),
+          GURL(kTestUrl),
+          "GET",
+          web_contents()->GetRenderViewHost()->GetProcess()->GetID(),
+          web_contents()->GetRenderViewHost()->GetRoutingID(),
+          base::Unretained(&defer)));
+
+  // Wait for the request to finish processing.
+  message_loop_.Run();
+}
+
+TEST_F(InterceptNavigationResourceThrottleTest,
+       CallbackIsPostTrueForPost) {
+  bool defer = false;
+
+  EXPECT_CALL(*mock_callback_receiver_,
+              ShouldIgnoreNavigation(_, Ne(GURL(kUnsafeTestUrl)), _, true, _,
+                                     _))
+      .WillOnce(Return(false));
+
+  content::BrowserThread::PostTask(
+      content::BrowserThread::IO,
+      FROM_HERE,
+      base::Bind(
+          &InterceptNavigationResourceThrottleTest::
+              RunThrottleWillStartRequestOnIOThread,
+          base::Unretained(this),
+          GURL(kTestUrl),
+          "POST",
+          web_contents()->GetRenderViewHost()->GetProcess()->GetID(),
+          web_contents()->GetRenderViewHost()->GetRoutingID(),
+          base::Unretained(&defer)));
+
+  // Wait for the request to finish processing.
+  message_loop_.Run();
+}
+
+}  // namespace components
diff --git a/components/test/DEPS b/components/test/DEPS
new file mode 100644
index 0000000..c220939
--- /dev/null
+++ b/components/test/DEPS
@@ -0,0 +1,4 @@
+include_rules = [
+  "+content/public/test",
+  "+ui/compositor",
+]
diff --git a/components/test/run_all_unittests.cc b/components/test/run_all_unittests.cc
index 2c8d29c..49032ba 100644
--- a/components/test/run_all_unittests.cc
+++ b/components/test/run_all_unittests.cc
@@ -2,8 +2,46 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+#include "base/memory/scoped_ptr.h"
 #include "base/test/test_suite.h"
+#include "content/public/test/test_content_client_initializer.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "ui/compositor/compositor_setup.h"
+
+namespace components {
+
+class ComponentsUnitTestEventListener : public testing::EmptyTestEventListener {
+ public:
+  ComponentsUnitTestEventListener() {}
+  virtual ~ComponentsUnitTestEventListener() {}
+
+  virtual void OnTestStart(const testing::TestInfo& test_info) OVERRIDE {
+    content_initializer_.reset(new content::TestContentClientInitializer());
+  }
+
+  virtual void OnTestEnd(const testing::TestInfo& test_info) OVERRIDE {
+    content_initializer_.reset();
+  }
+
+ private:
+  scoped_ptr<content::TestContentClientInitializer> content_initializer_;
+
+  DISALLOW_COPY_AND_ASSIGN(ComponentsUnitTestEventListener);
+};
+
+}  // namespace components
 
 int main(int argc, char** argv) {
-  return base::TestSuite(argc, argv).Run();
+  base::TestSuite test_suite(argc, argv);
+
+  // Mock out the compositor on platforms that use it.
+  ui::SetupTestCompositor();
+
+  // The listener will set up common test environment for all components unit
+  // tests.
+  testing::TestEventListeners& listeners =
+      testing::UnitTest::GetInstance()->listeners();
+  listeners.Append(new components::ComponentsUnitTestEventListener());
+
+  return test_suite.Run();
 }