Delegate root layer scroll offset to android_webview.

This connects the LayerScrollOffsetDeleate to the android_webview
layer via the SynchronousCompositor.

BUG=b/6029133
TESTS=None
R=joth@chromium.org

Review URL: https://chromiumcodereview.appspot.com/15002007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@205591 0039d316-1c4b-4281-b951-d872f2087c98

2 files changed, 14 insertions, 0 deletions

diff --git a/android_webview/browser/in_process_view_renderer.cc b/android_webview/browser/in_process_view_renderer.cc
index ff45481..c321a6d 100644
--- a/android_webview/browser/in_process_view_renderer.cc
+++ b/android_webview/browser/in_process_view_renderer.cc
@@ -569,6 +569,16 @@ void InProcessViewRenderer::SetContinuousInvalidate(bool invalidate) {
   EnsureContinuousInvalidation();
 }
 
+void InProcessViewRenderer::SetTotalRootLayerScrollOffset(
+    gfx::Vector2dF new_value) {
+  // TODO(mkosiba): Plumb this all the way through to the view.
+  scroll_offset_ = new_value;
+}
+
+gfx::Vector2dF InProcessViewRenderer::GetTotalRootLayerScrollOffset() {
+  return scroll_offset_;
+}
+
 void InProcessViewRenderer::Invalidate() {
   continuous_invalidate_task_pending_ = false;
   if (continuous_invalidate_)
diff --git a/android_webview/browser/in_process_view_renderer.h b/android_webview/browser/in_process_view_renderer.h
index 4175dd1..ab8193a 100644
--- a/android_webview/browser/in_process_view_renderer.h
+++ b/android_webview/browser/in_process_view_renderer.h
@@ -53,6 +53,8 @@ class InProcessViewRenderer : public BrowserViewRenderer,
   virtual void DidDestroyCompositor(
       content::SynchronousCompositor* compositor) OVERRIDE;
   virtual void SetContinuousInvalidate(bool invalidate) OVERRIDE;
+  virtual void SetTotalRootLayerScrollOffset(gfx::Vector2dF new_value) OVERRIDE;
+  virtual gfx::Vector2dF GetTotalRootLayerScrollOffset() OVERRIDE;
 
   void WebContentsGone();
 
@@ -91,6 +93,8 @@ class InProcessViewRenderer : public BrowserViewRenderer,
   // Last View scroll before hardware rendering is triggered.
   gfx::Point hw_rendering_scroll_;
 
+  gfx::Vector2dF scroll_offset_;
+
   base::WeakPtrFactory<InProcessViewRenderer> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(InProcessViewRenderer);