Plumb pinch virtual viewport flag to CC.

content/browser/renderer_host/render_process_host_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.
 
 // Represents the browser side of the browser <--> renderer communication
 // channel. There will be one RenderProcessHost per renderer process.
 
 #include "content/browser/renderer_host/render_process_host_impl.h"
 
 #include <algorithm>
@@ skipping 947 matching lines @@
     // also be added to chrome/browser/chromeos/login/chrome_restart_request.cc.
     cc::switches::kBackgroundColorInsteadOfCheckerboard,
     cc::switches::kCompositeToMailbox,
     cc::switches::kDisableColorEstimator,
     cc::switches::kDisableImplSidePainting,
     cc::switches::kDisableThreadedAnimation,
     cc::switches::kEnableCompositorFrameMessage,
     cc::switches::kEnableImplSidePainting,
     cc::switches::kEnablePartialSwap,
     cc::switches::kEnablePerTilePainting,
+    cc::switches::kEnablePinchVirtualViewport,
     cc::switches::kEnableRightAlignedScheduling,
     cc::switches::kEnableTopControlsPositionCalculation,
     cc::switches::kForceDirectLayerDrawing,
     cc::switches::kLowResolutionContentsScaleFactor,
     cc::switches::kMaxTilesForInterestArea,
     cc::switches::kMaxUnusedResourceMemoryUsagePercentage,
     cc::switches::kNumRasterThreads,
     cc::switches::kShowCompositedLayerBorders,
     cc::switches::kShowCompositedLayerTree,
     cc::switches::kShowFPSCounter,
@@ skipping 789 matching lines @@
   TRACE_EVENT0("renderer_host",
                "RenderWidgetHostImpl::OnCompositorSurfaceBuffersSwappedNoHost");
   AcceleratedSurfaceMsg_BufferPresented_Params ack_params;
   ack_params.sync_point = 0;
   RenderWidgetHostImpl::AcknowledgeBufferPresent(params.route_id,
                                                  params.gpu_process_host_id,
                                                  ack_params);
 }
 
 }  // namespace content