Add initial support for handling touch events in desktop chrome AURA.

content/browser/renderer_host/render_widget_host_view_aura.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/browser/renderer_host/render_widget_host_view_aura.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
@@ skipping 1488 matching lines @@
     if (should_not_forward) {
       synthetic_move_sent_ = false;
     } else {
       // Check if the mouse has reached the border and needs to be centered.
       if (ShouldMoveToCenter()) {
         synthetic_move_sent_ = true;
         window_->MoveCursorTo(center);
       }
 
       // Forward event to renderer.
-      if (CanRendererHandleEvent(event))
+      if (CanRendererHandleEvent(event) &&
+          !(event->flags() & ui::EF_FROM_TOUCH))
         host_->ForwardMouseEvent(mouse_event);
     }
     return;
   }
 
   // As the overscroll is handled during scroll events from the trackpad, the
   // RWHVA window is transformed by the overscroll controller. This transform
   // triggers a synthetic mouse-move event to be generated (by the aura
   // RootWindow). But this event interferes with the overscroll gesture. So,
   // ignore such synthetic mouse-move events if an overscroll gesture is in
   // progress.
   if (host_->overscroll_controller() &&
       host_->overscroll_controller()->overscroll_mode() != OVERSCROLL_NONE &&
       event->flags() & ui::EF_IS_SYNTHESIZED &&
       (event->type() == ui::ET_MOUSE_ENTERED ||
        event->type() == ui::ET_MOUSE_EXITED ||
        event->type() == ui::ET_MOUSE_MOVED)) {
     event->StopPropagation();
     return;
   }
 
   if (event->type() == ui::ET_MOUSEWHEEL) {
     WebKit::WebMouseWheelEvent mouse_wheel_event =
         MakeWebMouseWheelEvent(static_cast<ui::MouseWheelEvent*>(event));
     if (mouse_wheel_event.deltaX != 0 || mouse_wheel_event.deltaY != 0)
       host_->ForwardWheelEvent(mouse_wheel_event);
-  } else if (CanRendererHandleEvent(event)) {
+  } else if (CanRendererHandleEvent(event) &&
+             !(event->flags() & ui::EF_FROM_TOUCH)) {
     WebKit::WebMouseEvent mouse_event = MakeWebMouseEvent(event);
     ModifyEventMovementAndCoords(&mouse_event);
     host_->ForwardMouseEvent(mouse_event);
   }
 
   switch (event->type()) {
     case ui::ET_MOUSE_PRESSED:
       window_->SetCapture();
       // Confirm existing composition text on mouse click events, to make sure
       // the input caret won't be moved with an ongoing composition text.
       FinishImeCompositionSession();
       break;
     case ui::ET_MOUSE_RELEASED:
       window_->ReleaseCapture();
       break;
     default:
       break;
   }
 
   // Needed to propagate mouse event to native_tab_contents_view_aura.
   // TODO(pkotwicz): Find a better way of doing this.
-  if (window_->parent()->delegate())
+  if (window_->parent()->delegate() && !(event->flags() & ui::EF_FROM_TOUCH))
     window_->parent()->delegate()->OnMouseEvent(event);
 
   event->SetHandled();
 }
 
 void RenderWidgetHostViewAura::OnScrollEvent(ui::ScrollEvent* event) {
   TRACE_EVENT0("browser", "RenderWidgetHostViewAura::OnScrollEvent");
   if (event->type() == ui::ET_SCROLL) {
     WebKit::WebGestureEvent gesture_event =
         MakeWebGestureEventFlingCancel();
@@ skipping 402 matching lines @@
     RenderWidgetHost* widget) {
   return new RenderWidgetHostViewAura(widget);
 }
 
 // static
 void RenderWidgetHostViewPort::GetDefaultScreenInfo(WebScreenInfo* results) {
   GetScreenInfoForWindow(results, NULL);
 }
 
 }  // namespace content