Upstream ShouldOverrideUrlLoading changes

android_webview/browser/renderer_host/aw_render_view_host_ext.h

Index: android_webview/browser/renderer_host/aw_render_view_host_ext.h
diff --git a/android_webview/browser/renderer_host/aw_render_view_host_ext.h b/android_webview/browser/renderer_host/aw_render_view_host_ext.h
index c9d90c680e748bed16a1cb7d87fa82cd5bcde9ff..98cb51a124da5d30a3b0f34685ef9c9b63490ace 100644
--- a/android_webview/browser/renderer_host/aw_render_view_host_ext.h
+++ b/android_webview/browser/renderer_host/aw_render_view_host_ext.h
@@ -28,6 +28,8 @@ class AwRenderViewHostExtClient {
   virtual void OnWebLayoutPageScaleFactorChanged(float page_scale_factor) = 0;
   virtual void OnWebLayoutContentsSizeChanged(
       const gfx::Size& contents_size) = 0;
+  // Called when there is a top level navigation.
+  virtual bool OnShouldOverrideUrlLoading(const base::string16& url) = 0;
 
  protected:
   virtual ~AwRenderViewHostExtClient() {}
@@ -92,6 +94,8 @@ class AwRenderViewHostExt : public content::WebContentsObserver,
   void OnUpdateHitTestData(const AwHitTestData& hit_test_data);
   void OnPageScaleFactorChanged(float page_scale_factor);
   void OnContentsSizeChanged(const gfx::Size& contents_size);
+  void OnShouldOverrideUrlLoading(const base::string16& url,
+                                  bool* ignore_navigation);
 
   bool IsRenderViewReady() const;