OverscrollGlow for mainThread-{CHROMIUM CHANGES}

content/browser/renderer_host/render_widget_host_view_android.cc

Index: content/browser/renderer_host/render_widget_host_view_android.cc
diff --git a/content/browser/renderer_host/render_widget_host_view_android.cc b/content/browser/renderer_host/render_widget_host_view_android.cc
index f687931630d13362e870a52b05148dbc3da4b7a4..3a2ad68e2fa782cda16794425951bea3baa93a39 100644
--- a/content/browser/renderer_host/render_widget_host_view_android.cc
+++ b/content/browser/renderer_host/render_widget_host_view_android.cc
@@ -402,6 +402,8 @@ bool RenderWidgetHostViewAndroid::OnMessageReceived(
     IPC_MESSAGE_HANDLER(ViewHostMsg_StartContentIntent, OnStartContentIntent)
     IPC_MESSAGE_HANDLER(ViewHostMsg_DidChangeBodyBackgroundColor,
                         OnDidChangeBodyBackgroundColor)
+    IPC_MESSAGE_HANDLER(ViewHostMsg_DidOverScrollOnMainThread,
+                        OnDidOverScrollOnMainThread)
     IPC_MESSAGE_HANDLER(ViewHostMsg_SetNeedsBeginFrames,
                         OnSetNeedsBeginFrames)
     IPC_MESSAGE_HANDLER(ViewHostMsg_TextInputStateChanged,
@@ -763,6 +765,19 @@ void RenderWidgetHostViewAndroid::OnDidChangeBodyBackgroundColor(
     content_view_core_->OnBackgroundColorChanged(color);
 }
 
+void RenderWidgetHostViewAndroid::OnDidOverScrollOnMainThread(

[jdduke (slow), 2015/04/24 16:57:23]

Looks like we don't make any distinctino between main/impl overscroll, so we
should get this for free if we reuse the existing overscroll message.

[MuVen, 2015/04/27 09:49:15]

Done.

+    gfx::Vector2dF unused_delta,
+    gfx::Vector2dF accumalted_root_overscroll,
+    gfx::Vector2dF flingVelocity,
+    gfx::PointF event_point) {
+  DidOverscrollParams params;
+  params.accumulated_overscroll = accumalted_root_overscroll;
+  params.latest_overscroll_delta = unused_delta;
+  params.current_fling_velocity = flingVelocity;
+  params.causal_event_viewport_point = event_point;
+  DidOverscroll(params);
+}
+
 void RenderWidgetHostViewAndroid::OnSetNeedsBeginFrames(bool enabled) {
   TRACE_EVENT1("cc", "RenderWidgetHostViewAndroid::OnSetNeedsBeginFrames",
                "enabled", enabled);