Introduce the BrowserState interface and implementation.

BrowserState is the interface that will serve as alternative to
content::BrowserContext on iOS. This CL introduces the BrowserState interface
and additionally introduces its implementation. BrowserState is not yet wired
up to other objects in the web layer (e.g., WebState); that wiring up will
happen in future CLs.

BUG=419366

Review URL: https://codereview.chromium.org/702663003

Cr-Commit-Position: refs/heads/master@{#303808}

3 files changed, 51 insertions, 0 deletions

diff --git a/ios/web/browser_state.cc b/ios/web/browser_state.cc
new file mode 100644
index 0000000..df2499a
--- /dev/null
+++ b/ios/web/browser_state.cc
@@ -0,0 +1,13 @@
+// Copyright 2014 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 "ios/web/public/browser_state.h"
+
+namespace web {
+BrowserState::BrowserState() {
+}
+
+BrowserState::~BrowserState() {
+}
+}
diff --git a/ios/web/ios_web.gyp b/ios/web/ios_web.gyp
index 7522981..df40501d 100644
--- a/ios/web/ios_web.gyp
+++ b/ios/web/ios_web.gyp
@@ -20,8 +20,10 @@
         '../../ui/gfx/gfx.gyp:gfx',
       ],
       'sources': [
+        'browser_state.cc',
         'navigation/navigation_item_impl.h',
         'navigation/navigation_item_impl.mm',
+        'public/browser_state.h',
         'public/favicon_status.cc',
         'public/favicon_status.h',
         'public/navigation_item.h',
diff --git a/ios/web/public/browser_state.h b/ios/web/public/browser_state.h
new file mode 100644
index 0000000..0b68ef1
--- /dev/null
+++ b/ios/web/public/browser_state.h
@@ -0,0 +1,36 @@
+// Copyright 2014 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 IOS_WEB_PUBLIC_BROWSER_STATE_H_
+#define IOS_WEB_PUBLIC_BROWSER_STATE_H_
+
+#include "base/supports_user_data.h"
+
+namespace net {
+class URLRequestContextGetter;
+}
+
+namespace web {
+
+// This class holds the context needed for a browsing session.
+// It lives on the UI thread. All these methods must only be called on the UI
+// thread.
+class BrowserState : public base::SupportsUserData {
+ public:
+  virtual ~BrowserState();
+
+  // Return whether this BrowserState is incognito. Default is false.
+  virtual bool IsOffTheRecord() const = 0;
+
+  // Returns the request context information associated with this
+  // BrowserState.
+  virtual net::URLRequestContextGetter* GetRequestContext() = 0;
+
+ protected:
+  BrowserState();
+};
+
+}  // namespace web
+
+#endif  // IOS_WEB_PUBLIC_BROWSER_STATE_H_