Fix for pinch virtual viewport flag wasn't fully enabled.

content/browser/gpu/compositor_util.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/gpu/compositor_util.h"
 
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "build/build_config.h"
 #include "cc/base/switches.h"
@@ skipping 138 matching lines @@
           true
       }
   };
   DCHECK(index < arraysize(kGpuFeatureInfo));
   *eof = (index == arraysize(kGpuFeatureInfo) - 1);
   return kGpuFeatureInfo[index];
 }
 
 }  // namespace
 
+bool IsPinchVirtualViewportEnabled() {
+  const CommandLine& command_line = *CommandLine::ForCurrentProcess();
+
+  // Command line switches take precedence over platform default.
+  if (command_line.HasSwitch(cc::switches::kDisablePinchVirtualViewport))
+    return false;
+  if (command_line.HasSwitch(cc::switches::kEnablePinchVirtualViewport))
+    return true;
+
+#if defined(OS_CHROMEOS)
+  return true;
+#else
+  return false;
+#endif
+}
+
 bool IsThreadedCompositingEnabled() {
   const CommandLine& command_line = *CommandLine::ForCurrentProcess();
 
   // Command line switches take precedence over blacklist.
   if (command_line.HasSwitch(switches::kDisableThreadedCompositing))
     return false;
   if (command_line.HasSwitch(switches::kEnableThreadedCompositing))
     return true;
 
 #if defined(USE_AURA) || defined(OS_MACOSX)
@@ skipping 173 matching lines @@
   return problem_list;
 }
 
 base::Value* GetDriverBugWorkarounds() {
   base::ListValue* workaround_list = new base::ListValue();
   GpuDataManagerImpl::GetInstance()->GetDriverBugWorkarounds(workaround_list);
   return workaround_list;
 }
 
 }  // namespace content