[Mac] Rubber-banding on Lion.

content/browser/renderer_host/render_widget_host.cc

 // Copyright (c) 2011 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/browser/renderer_host/render_widget_host.h"
 
 #include "base/auto_reset.h"
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
 #include "base/i18n/rtl.h"
@@ skipping 16 matching lines @@
 #include "content/common/view_messages.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebCompositionUnderline.h"
 #include "ui/base/keycodes/keyboard_codes.h"
 #include "webkit/glue/webcursor.h"
 #include "webkit/plugins/npapi/webplugin.h"
 
 using base::Time;
 using base::TimeDelta;
 using base::TimeTicks;
 
+using WebKit::WebGestureEvent;
 using WebKit::WebInputEvent;
 using WebKit::WebKeyboardEvent;
 using WebKit::WebMouseEvent;
 using WebKit::WebMouseWheelEvent;
 using WebKit::WebTextDirection;
 
 // How long to (synchronously) wait for the renderer to respond with a
 // PaintRect message, when our backing-store is invalid, before giving up and
 // returning a null or incorrectly sized backing-store from GetBackingStore.
 // This timeout impacts the "choppiness" of our window resize perf.
@@ skipping 506 matching lines @@
     return;
   }
   mouse_wheel_pending_ = true;
 
   HISTOGRAM_COUNTS_100("MPArch.RWH_WheelQueueSize",
                        coalesced_mouse_wheel_events_.size());
 
   ForwardInputEvent(wheel_event, sizeof(WebMouseWheelEvent), false);
 }
 
+void RenderWidgetHost::ForwardGestureEvent(
+    const WebKit::WebGestureEvent& gesture_event) {
+  TRACE_EVENT0("renderer_host", "RenderWidgetHost::ForwardWheelEvent");
+  if (ignore_input_events_ || process_->ignore_input_events())
+    return;
+
+  ForwardInputEvent(gesture_event, sizeof(WebGestureEvent), false);
+}
+
 void RenderWidgetHost::ForwardKeyboardEvent(
     const NativeWebKeyboardEvent& key_event) {
   TRACE_EVENT0("renderer_host", "RenderWidgetHost::ForwardKeyboardEvent");
   if (ignore_input_events_ || process_->ignore_input_events())
     return;
 
   if (key_event.type == WebKeyboardEvent::Char &&
       (key_event.windowsKeyCode == ui::VKEY_RETURN ||
        key_event.windowsKeyCode == ui::VKEY_SPACE)) {
     OnUserGesture();
@@ skipping 290 matching lines @@
       Details<PaintAtSizeAckDetails>(&details));
 }
 
 void RenderWidgetHost::OnMsgUpdateRect(
     const ViewHostMsg_UpdateRect_Params& params) {
   TRACE_EVENT0("renderer_host", "RenderWidgetHost::OnMsgUpdateRect");
   TimeTicks paint_start = TimeTicks::Now();
 
   // Update our knowledge of the RenderWidget's size.
   current_size_ = params.view_size;
+  // Update our knowledge of the RenderWidget's contents size.
+  contents_size_ = params.contents_size;
   // Update our knowledge of the RenderWidget's scroll offset.
   last_scroll_offset_ = params.scroll_offset;
 
   bool is_resize_ack =
       ViewHostMsg_UpdateRect_Flags::is_resize_ack(params.flags);
 
   // resize_ack_pending_ needs to be cleared before we call DidPaintRect, since
   // that will end up reaching GetBackingStore.
   if (is_resize_ack) {
     DCHECK(resize_ack_pending_);
@@ skipping 320 matching lines @@
     view_->CreatePluginContainer(deferred_plugin_handles_[i]);
 #endif
   }
 
   deferred_plugin_handles_.clear();
 }
 
 void RenderWidgetHost::StartUserGesture() {
   OnUserGesture();
 }