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 d05520d514b7ee525f1b85ec78f8fb7ceb1cd04b..3f5b2e4b66baa617f2828c4f7eab4136d0c146d2 100644
--- a/ui/android/view_android.h
+++ b/ui/android/view_android.h
@@ -60,6 +60,16 @@ class UI_ANDROID_EXPORT ViewAndroid {
   ViewAndroid();
   virtual ~ViewAndroid();
 
+  // The content offset is used to translate snapshots to
+  // the correct part of the view.
+  void set_content_offset(const gfx::Vector2dF& content_offset) {

[Theresa, 2017/01/09 16:03:53]

nit: I think mentioning that the content offset is in CSS pixels in this comment
makes it easier for clients to know what is expected without reading through the
rest of the header file.

[Jinsuk Kim, 2017/01/09 23:31:09]

Done.

+    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;
@@ -126,6 +136,7 @@ class UI_ANDROID_EXPORT ViewAndroid {
 
   int physical_width_pix_;
   int physical_height_pix_;
+  gfx::Vector2dF content_offset_;  // in CSS pixel
 
   DISALLOW_COPY_AND_ASSIGN(ViewAndroid);
 };