Move content offset to ViewAndroid

ui/android/view_android.h

Index: ui/android/view_android.h
diff --git a/ui/android/view_android.h b/ui/android/view_android.h
index a996e6804bbc10fc38449e43b34be7937fab6942..1540c3625d6d574fb943c9f55335b87f735adae0 100644
--- a/ui/android/view_android.h
+++ b/ui/android/view_android.h
@@ -61,6 +61,16 @@ class UI_ANDROID_EXPORT ViewAndroid {
   ViewAndroid();
   virtual ~ViewAndroid();
 
+  // The content offset is used to translate snapshots to the correct part of
+  // the window.
+  void set_content_offset(const gfx::Vector2dF& content_offset) {
+    content_offset_ = content_offset;
+  }
+
+  gfx::Vector2dF content_offset() const {
+    return content_offset_;
+  }
+
   // Returns the window at the root of this hierarchy, or |null|
   // if disconnected.
   virtual WindowAndroid* GetWindowAndroid() const;
@@ -101,6 +111,7 @@ class UI_ANDROID_EXPORT ViewAndroid {
   std::list<ViewAndroid*> children_;
   scoped_refptr<cc::Layer> layer_;
   JavaObjectWeakGlobalRef delegate_;
+  gfx::Vector2dF content_offset_;
 
   DISALLOW_COPY_AND_ASSIGN(ViewAndroid);
 };