Add a flag to disable partial raster in renderer

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 "base/metrics/field_trial.h"
 #include "base/strings/string_number_conversions.h"
@@ skipping 190 matching lines @@
 bool IsZeroCopyUploadEnabled() {
   const base::CommandLine& command_line =
       *base::CommandLine::ForCurrentProcess();
 #if defined(OS_MACOSX)
   return !command_line.HasSwitch(switches::kDisableZeroCopy);
 #else
   return command_line.HasSwitch(switches::kEnableZeroCopy);
 #endif
 }
 
-bool IsPersistentGpuMemoryBufferEnabled() {
-  // Zero copy currently doesn't take advantage of persistent buffers.
+bool IsPartialRasterEnabled() {
+  // Zero copy currently doesn't take advantage of partial raster.
   if (IsZeroCopyUploadEnabled())
     return false;
   const auto& command_line = *base::CommandLine::ForCurrentProcess();
-  return command_line.HasSwitch(switches::kEnablePersistentGpuMemoryBuffer);
+  return command_line.HasSwitch(switches::kEnablePartialRaster);
 }
 
 bool IsGpuRasterizationEnabled() {
   const base::CommandLine& command_line =
       *base::CommandLine::ForCurrentProcess();
 
   if (command_line.HasSwitch(switches::kDisableGpuRasterization))
     return false;
   else if (command_line.HasSwitch(switches::kEnableGpuRasterization))
     return true;
@@ skipping 154 matching lines @@
     }
   }
   return problem_list;
 }
 
 std::vector<std::string> GetDriverBugWorkarounds() {
   return GpuDataManagerImpl::GetInstance()->GetDriverBugWorkarounds();
 }
 
 }  // namespace content