[Athena] Hack to display favicons for web activities in overview mode

athena/content/web_activity.h

Index: athena/content/web_activity.h
diff --git a/athena/content/web_activity.h b/athena/content/web_activity.h
index 6f8f9a96d45ecac700916431f617b220bd8e269d..2e3ed419cb71367374e86a49bdf93630568a5bbb 100644
--- a/athena/content/web_activity.h
+++ b/athena/content/web_activity.h
@@ -5,17 +5,25 @@
 #ifndef ATHENA_CONTENT_PUBLIC_WEB_ACTIVITY_H_
 #define ATHENA_CONTENT_PUBLIC_WEB_ACTIVITY_H_
 
+#include <vector>
+
 #include "athena/activity/public/activity.h"
 #include "athena/activity/public/activity_view_model.h"
 #include "base/strings/string16.h"
 #include "content/public/browser/web_contents_observer.h"
 #include "ui/gfx/image/image_skia.h"
 
+class SkBitmap;
+
 namespace content {
 class BrowserContext;
 class WebContents;
 }
 
+namespace gfx {
+class Size;
+}
+
 namespace views {
 class WebView;
 class WidgetDelegate;
@@ -49,6 +57,7 @@ class WebActivity : public Activity,
   virtual void Init() OVERRIDE;
   virtual SkColor GetRepresentativeColor() const OVERRIDE;
   virtual base::string16 GetTitle() const OVERRIDE;
+  virtual gfx::ImageSkia GetIcon() const OVERRIDE;
   virtual bool UsesFrame() const OVERRIDE;
   virtual views::View* GetContentsView() OVERRIDE;
   virtual void CreateOverviewModeImage() OVERRIDE;
@@ -57,6 +66,9 @@ class WebActivity : public Activity,
   virtual void ResetContentsView() OVERRIDE;
 
   // content::WebContentsObserver:
+  virtual void DidNavigateMainFrame(
+      const content::LoadCommittedDetails& details,
+      const content::FrameNavigateParams& params) OVERRIDE;
   virtual void TitleWasSet(content::NavigationEntry* entry,
                            bool explicit_set) OVERRIDE;
   virtual void DidUpdateFaviconURL(
@@ -64,6 +76,15 @@ class WebActivity : public Activity,
   virtual void DidChangeThemeColor(SkColor theme_color) OVERRIDE;
 
  private:
+  // Called when a favicon download initiated in DidUpdateFaviconURL()
+  // has completed.
+  void OnDidDownloadFavicon(
+      int id,
+      int http_status_code,
+      const GURL& url,
+      const std::vector<SkBitmap>& bitmaps,
+      const std::vector<gfx::Size>& original_bitmap_sizes);
+
   // Make the content visible. This call should only be paired with
   // MakeInvisible. Note: Upon object creation the content is visible.
   void MakeVisible();
@@ -77,6 +98,7 @@ class WebActivity : public Activity,
 
   content::BrowserContext* browser_context_;
   const base::string16 title_;
+  gfx::ImageSkia icon_;
   const GURL url_;
   AthenaWebView* web_view_;
   SkColor title_color_;