Chromium compositor change implementing page-scale driven pinch-zoom.

content/browser/web_contents/web_contents_impl.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/web_contents/web_contents_impl.h"
 
 #include <utility>
 
 #include "base/command_line.h"
 #include "base/metrics/field_trial.h"
@@ skipping 662 matching lines @@
   }
 
   prefs.fixed_position_creates_stacking_context = !command_line.HasSwitch(
       switches::kDisableFixedPositionCreatesStackingContext);
 
   prefs.gesture_tap_highlight_enabled = command_line.HasSwitch(
       switches::kEnableGestureTapHighlight);
 
   prefs.number_of_cpu_cores = base::SysInfo::NumberOfProcessors();
 
+  prefs.apply_page_scale_factor_in_compositor =
+      command_line.HasSwitch(switches::kEnablePinchInCompositor);
+
   content::GetContentClient()->browser()->OverrideWebkitPrefs(rvh, url, &prefs);
 
   // Disable compositing in guests until we have compositing path implemented
   // for guests.
   if (rvh->GetProcess()->IsGuest())
     prefs.force_compositing_mode = false;
 
   return prefs;
 }
 
@@ skipping 2719 matching lines @@
   }
 }
 
 content::BrowserPluginGuest* WebContentsImpl::GetBrowserPluginGuest() {
   return browser_plugin_guest_.get();
 }
 
 content::BrowserPluginEmbedder* WebContentsImpl::GetBrowserPluginEmbedder() {
   return browser_plugin_embedder_.get();
 }