Add WebView implementation for CookieManager.

android_webview/lib/aw_browser_dependency_factory_impl.h

Index: android_webview/lib/aw_browser_dependency_factory_impl.h
diff --git a/android_webview/lib/aw_browser_dependency_factory_impl.h b/android_webview/lib/aw_browser_dependency_factory_impl.h
index fae835f31032b2991001ab9c4e7aae0fd1ee2c1e..4b9a00371d823a9e0ca1c00239d9d999a23391e6 100644
--- a/android_webview/lib/aw_browser_dependency_factory_impl.h
+++ b/android_webview/lib/aw_browser_dependency_factory_impl.h
@@ -8,9 +8,16 @@
 #include "android_webview/native/aw_browser_dependency_factory.h"
 
 #include "base/compiler_specific.h"
+#include "base/memory/scoped_ptr.h"
+
+namespace net {
+class URLRequestContextGetter;
+}
 
 namespace android_webview {
 
+class AwNetworkDelegate;
+
 class AwBrowserDependencyFactoryImpl : public AwBrowserDependencyFactory {
  public:
   AwBrowserDependencyFactoryImpl();
@@ -20,6 +27,7 @@ class AwBrowserDependencyFactoryImpl : public AwBrowserDependencyFactory {
   static void InstallInstance();
 
   // AwBrowserDependencyFactory
+  virtual content::BrowserContext* GetBrowserContext(bool incognito) OVERRIDE;
   virtual content::WebContents* CreateWebContents(bool incognito) OVERRIDE;
   virtual AwContentsContainer* CreateContentsContainer(
       content::WebContents* contents) OVERRIDE;
@@ -27,6 +35,16 @@ class AwBrowserDependencyFactoryImpl : public AwBrowserDependencyFactory {
       OVERRIDE;
 
  private:
+  void InitializeNetworkDelegateOnIOThread(
+      net::URLRequestContextGetter* normal_context,
+      net::URLRequestContextGetter* incognito_context);
+  void EnsureNetworkDelegateInitialized();
+
+  // Constructed and assigned on the IO thread.
+  scoped_ptr<AwNetworkDelegate> network_delegate_;
+  // Set on the UI thread.
+  bool initialized_network_delegate_;
+
   DISALLOW_COPY_AND_ASSIGN(AwBrowserDependencyFactoryImpl);
 };