<webview>: Move PreHandleGestureEvent in chrome

chrome/browser/guest_view/guest_view_base.cc

 // Copyright 2014 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 "chrome/browser/guest_view/guest_view_base.h"
 
 #include "base/lazy_instance.h"
 #include "chrome/browser/guest_view/ad_view/ad_view_guest.h"
 #include "chrome/browser/guest_view/guest_view_constants.h"
 #include "chrome/browser/guest_view/guest_view_manager.h"
 #include "chrome/browser/guest_view/web_view/web_view_guest.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/common/content_settings.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/common/url_constants.h"
 #include "extensions/browser/event_router.h"
 #include "net/base/escape.h"
+#include "third_party/WebKit/public/web/WebInputEvent.h"
 
 using content::WebContents;
 
 namespace {
 
 typedef std::map<WebContents*, GuestViewBase*> WebContentsGuestViewMap;
 static base::LazyInstance<WebContentsGuestViewMap> webcontents_guestview_map =
     LAZY_INSTANCE_INITIALIZER;
 
 }  // namespace
@@ skipping 153 matching lines @@
     return;
   }
   opener_ = base::WeakPtr<GuestViewBase>();
 }
 
 void GuestViewBase::RegisterDestructionCallback(
     const DestructionCallback& callback) {
   destruction_callback_ = callback;
 }
 
+bool GuestViewBase::PreHandleGestureEvent(content::WebContents* source,
+                                         const blink::WebGestureEvent& event) {
+  return event.type == blink::WebGestureEvent::GesturePinchBegin ||
+      event.type == blink::WebGestureEvent::GesturePinchUpdate ||
+      event.type == blink::WebGestureEvent::GesturePinchEnd;
+}
+
 GuestViewBase::~GuestViewBase() {
   std::pair<int, int> key(embedder_render_process_id_, guest_instance_id_);
 
   webcontents_guestview_map.Get().erase(guest_web_contents());
 
   GuestViewManager::FromBrowserContext(browser_context_)->
       RemoveGuest(guest_instance_id_);
 
   pending_events_.clear();
 }
@@ skipping 30 matching lines @@
 
 void GuestViewBase::SendQueuedEvents() {
   if (!attached())
     return;
   while (!pending_events_.empty()) {
     linked_ptr<Event> event_ptr = pending_events_.front();
     pending_events_.pop_front();
     DispatchEvent(event_ptr.release());
   }
 }