Enable Tracing on content shell for Android

BUG=166802


Review URL: https://chromiumcodereview.appspot.com/11647013

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@175730 0039d316-1c4b-4281-b951-d872f2087c98

3 files changed, 87 insertions, 0 deletions

diff --git a/content/browser/android/browser_jni_registrar.cc b/content/browser/android/browser_jni_registrar.cc
index 15f8594..4d2b7ea 100644
--- a/content/browser/android/browser_jni_registrar.cc
+++ b/content/browser/android/browser_jni_registrar.cc
@@ -18,6 +18,7 @@
 #include "content/browser/android/sandboxed_process_launcher.h"
 #include "content/browser/android/surface_texture_peer_browser_impl.h"
 #include "content/browser/android/touch_point.h"
+#include "content/browser/android/tracing_intent_handler.h"
 #include "content/browser/android/web_contents_observer_android.h"
 #include "content/browser/geolocation/location_api_adapter_android.h"
 #include "content/browser/renderer_host/ime_adapter_android.h"
@@ -46,6 +47,7 @@ base::android::RegistrationMethod kContentRegisteredMethods[] = {
   { "RegisterImeAdapter", content::RegisterImeAdapter },
   { "SandboxedProcessLauncher", content::RegisterSandboxedProcessLauncher },
   { "TouchPoint", content::RegisterTouchPoint },
+  { "TracingIntentHandler", content::RegisterTracingIntentHandler },
   { "WebContentsObserverAndroid", content::RegisterWebContentsObserverAndroid },
   { "WebViewStatics", content::RegisterWebViewStatics },
 };
diff --git a/content/browser/android/tracing_intent_handler.cc b/content/browser/android/tracing_intent_handler.cc
new file mode 100644
index 0000000..2b44a46
--- /dev/null
+++ b/content/browser/android/tracing_intent_handler.cc
@@ -0,0 +1,53 @@
+// 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 "content/browser/android/tracing_intent_handler.h"
+
+#include "base/android/jni_android.h"
+#include "base/android/jni_string.h"
+#include "base/logging.h"
+#include "content/public/browser/trace_controller.h"
+#include "jni/TracingIntentHandler_jni.h"
+
+namespace content {
+
+TracingIntentHandler* g_trace_intent_handler = NULL;
+
+TracingIntentHandler::TracingIntentHandler(const FilePath& path)
+    : TraceSubscriberStdio(path) {
+  TraceController::GetInstance()->BeginTracing(this, std::string("-test*"));
+}
+
+TracingIntentHandler::~TracingIntentHandler() {
+}
+
+void TracingIntentHandler::OnEndTracingComplete() {
+  TraceSubscriberStdio::OnEndTracingComplete();
+  delete this;
+}
+
+void TracingIntentHandler::OnEndTracing() {
+  if (!TraceController::GetInstance()->EndTracingAsync(this)) {
+    delete this;
+  }
+}
+
+static void BeginTracing(JNIEnv* env, jclass clazz, jstring jspath) {
+  std::string path(base::android::ConvertJavaStringToUTF8(env, jspath));
+  if (g_trace_intent_handler != NULL)
+    return;
+  g_trace_intent_handler = new TracingIntentHandler(FilePath(path));
+}
+
+static void EndTracing(JNIEnv* env, jclass clazz) {
+  DCHECK(!g_trace_intent_handler);
+  g_trace_intent_handler->OnEndTracing();
+  g_trace_intent_handler = NULL;
+}
+
+bool RegisterTracingIntentHandler(JNIEnv* env) {
+  return RegisterNativesImpl(env);
+}
+
+}  // namespace content
diff --git a/content/browser/android/tracing_intent_handler.h b/content/browser/android/tracing_intent_handler.h
new file mode 100644
index 0000000..526f672e
--- /dev/null
+++ b/content/browser/android/tracing_intent_handler.h
@@ -0,0 +1,32 @@
+// 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  CONTENT_BROWSER_ANDROID_TRACING_INTENT_HANDLER_H
+#define  CONTENT_BROWSER_ANDROID_TRACING_INTENT_HANDLER_H
+
+#include <jni.h>
+#include <string>
+
+#include "base/file_util.h"
+#include "content/browser/trace_subscriber_stdio.h"
+
+namespace content {
+
+// Registers the TracingIntentHandler native methods.
+bool RegisterTracingIntentHandler(JNIEnv* env);
+
+class TracingIntentHandler : public TraceSubscriberStdio {
+ public:
+  explicit TracingIntentHandler(const FilePath& path);
+  virtual ~TracingIntentHandler();
+
+  // TraceSubscriber implementation
+  virtual void OnEndTracingComplete() OVERRIDE;
+
+  // IntentHandler
+  void OnEndTracing();
+};
+
+}  // namespace content
+#endif  // CONTENT_BROWSER_ANDROID_TRACING_INTENT_HANDLER_H