OverscrollGlow for mainThread-{CHROMIUM CHANGES}

content/renderer/render_widget.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/renderer/render_widget.h"
 
 #include "base/auto_reset.h"
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/logging.h"
@@ skipping 2198 matching lines @@
   } else if (event.type == WebInputEvent::GestureLongPress) {
     DCHECK(webwidget_);
     if (webwidget_->textInputInfo().value.isEmpty())
       UpdateTextInputState(NO_SHOW_IME, FROM_NON_IME);
     else
       UpdateTextInputState(SHOW_IME_IF_NEEDED, FROM_NON_IME);
   }
 #endif
 }
 
+void RenderWidget::didOverscroll(
+    const blink::WebFloatSize& unusedDelta,
+    const blink::WebFloatSize& accumulatedRootOverScroll,
+    const blink::WebFloatPoint& position,
+    const blink::WebFloatSize& velocity) {
+  DidOverscrollParams params;
+  // TODO(jdduke): Consider bundling the overscroll with the input event ack to
+  // save an IPC.
+  params.accumulated_overscroll = gfx::Vector2dF(
+      accumulatedRootOverScroll.width, accumulatedRootOverScroll.height);
+  params.latest_overscroll_delta =
+      gfx::Vector2dF(unusedDelta.width, unusedDelta.height);
+  params.current_fling_velocity =
+      gfx::Vector2dF(velocity.width, velocity.height);
+  params.causal_event_viewport_point = gfx::PointF(position.x, position.y);
+  Send(new InputHostMsg_DidOverscroll(routing_id_, params));
+}
+
 void RenderWidget::StartCompositor() {
   // For widgets that are never visible, we don't need the compositor to run
   // at all.
   if (never_visible_)
     return;
   // In tests without a RenderThreadImpl, don't set ready as this kicks
   // off creating output surfaces that the test can't create.
   if (!RenderThreadImpl::current())
     return;
   compositor_->StartCompositor();
@@ skipping 207 matching lines @@
 void RenderWidget::RegisterVideoHoleFrame(RenderFrameImpl* frame) {
   video_hole_frames_.AddObserver(frame);
 }
 
 void RenderWidget::UnregisterVideoHoleFrame(RenderFrameImpl* frame) {
   video_hole_frames_.RemoveObserver(frame);
 }
 #endif  // defined(VIDEO_HOLE)
 
 }  // namespace content