Add overscroll edge effect animations for Android.

content/browser/android/content_view_core_impl.cc

Index: content/browser/android/content_view_core_impl.cc
diff --git a/content/browser/android/content_view_core_impl.cc b/content/browser/android/content_view_core_impl.cc
index 204145c773647024dade3629fe31daaf9bc4fbd1..98b71371e163fb819ffad78d887b72ac3539c095 100644
--- a/content/browser/android/content_view_core_impl.cc
+++ b/content/browser/android/content_view_core_impl.cc
@@ -331,6 +331,25 @@ void ContentViewCoreImpl::SetBackgroundColor(JNIEnv* env,
   rwhva->OnDidChangeBodyBackgroundColor(color);
 }
 
+void ContentViewCoreImpl::SetOverscrollResources(JNIEnv* env,
+                                                 jobject obj,
+                                                 jobject edge_bitmap,
+                                                 jobject glow_bitmap) {
+  if (!CommandLine::ForCurrentProcess()->
+          HasSwitch(switches::kEnableOverscrollEdgeEffect))
+      return;
+
+  overscroll_edge_ = !edge_bitmap ?
+      SkBitmap() : gfx::CreateSkBitmapFromJavaBitmap(edge_bitmap);
+  overscroll_glow_ = !glow_bitmap ?
+      SkBitmap() : gfx::CreateSkBitmapFromJavaBitmap(glow_bitmap);
+
+  RenderWidgetHostViewAndroid* rwhva = GetRenderWidgetHostViewAndroid();
+  if (!rwhva)
+    return;
+  rwhva->OnSetOverscrollResources();
+}
+
 void ContentViewCoreImpl::OnHide(JNIEnv* env, jobject obj) {
   Hide();
 }