Add flag to disable impl-side painting

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 833 matching lines @@
     // --in-process-webgl.
     switches::kUseGL,
     switches::kUseMobileUserAgent,
     switches::kUserAgent,
     switches::kV,
     switches::kVideoThreads,
     switches::kVModule,
     switches::kWebCoreLogChannels,
     cc::switches::kBackgroundColorInsteadOfCheckerboard,
     cc::switches::kEnableCompositorFrameMessage,
+    cc::switches::kDisableImplSidePainting,
     cc::switches::kEnableImplSidePainting,
     cc::switches::kEnablePartialSwap,
     cc::switches::kEnableRightAlignedScheduling,
     cc::switches::kEnableTopControlsPositionCalculation,
     cc::switches::kNumRasterThreads,
     cc::switches::kShowPropertyChangedRects,
     cc::switches::kShowSurfaceDamageRects,
     cc::switches::kShowScreenSpaceRects,
     cc::switches::kShowReplicaScreenSpaceRects,
     cc::switches::kShowNonOccludingRects,
@@ skipping 11 matching lines @@
   // Disable databases in incognito mode.
   if (GetBrowserContext()->IsOffTheRecord() &&
       !browser_cmd.HasSwitch(switches::kDisableDatabases)) {
     renderer_cmd->AppendSwitch(switches::kDisableDatabases);
 #if defined(OS_ANDROID)
     renderer_cmd->AppendSwitch(switches::kDisableMediaHistoryLogging);
 #endif
   }
 
   // Enforce the extra command line flags for impl-side painting.
-  if (browser_cmd.HasSwitch(cc::switches::kEnableImplSidePainting) &&
+  if (cc::switches::IsImplSidePaintingEnabled() &&
       !browser_cmd.HasSwitch(switches::kEnableDeferredImageDecoding))
     renderer_cmd->AppendSwitch(switches::kEnableDeferredImageDecoding);
 }
 
 base::ProcessHandle RenderProcessHostImpl::GetHandle() const {
   if (run_renderer_in_process())
     return base::Process::Current().handle();
 
   if (!child_process_launcher_.get() || child_process_launcher_->IsStarting())
     return base::kNullProcessHandle;
@@ skipping 731 matching lines @@
   TRACE_EVENT0("renderer_host",
                "RenderWidgetHostImpl::OnCompositorSurfaceBuffersSwappedNoHost");
   AcceleratedSurfaceMsg_BufferPresented_Params ack_params;
   ack_params.sync_point = 0;
   RenderWidgetHostImpl::AcknowledgeBufferPresent(route_id,
                                                  gpu_process_host_id,
                                                  ack_params);
 }
 
 }  // namespace content