Add a flag to disable partial raster in renderer

chrome/browser/chromeos/login/chrome_restart_request.cc

 // Copyright 2013 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 "chrome/browser/chromeos/login/chrome_restart_request.h"
 
 #include <vector>
 
 #include "ash/ash_switches.h"
 #include "base/command_line.h"
@@ skipping 65 matching lines @@
     ::switches::kDisableCastStreamingHWEncoding,
     ::switches::kDisableDistanceFieldText,
     ::switches::kDisableGpu,
     ::switches::kDisableGpuMemoryBufferVideoFrames,
     ::switches::kDisableGpuShaderDiskCache,
     ::switches::kDisableGpuWatchdog,
     ::switches::kDisableGpuCompositing,
     ::switches::kDisableGpuRasterization,
     ::switches::kDisableLowResTiling,
     ::switches::kDisableMediaSource,
-    ::switches::kDisablePersistentGpuMemoryBuffer,
+    ::switches::kDisablePartialRaster,

[ericrk, 2015/10/08 00:12:20]

Is there a reason we had a disable flag as well as an enable flag? Only enable
was used. Is this just the style?

[jbroman, 2015/10/08 14:08:22]

It wasn't necessary to forward it, no.

[danakj, 2015/10/08 15:18:43]

We dont use it in compositor_util either. Delete?

[jbroman, 2015/10/08 15:19:59]

Well, the disabling flag exists because at one point this feature was on and we
needed a flag to disable it. Right now it's off by default, so the disabling
flag is a no-op. :P

[danakj, 2015/10/08 15:21:27]

Ah, that's what happened. Usually you'd only have one flag and rename it when
changing it. Or check both but have one dominate the other in the is-enabled
code. Either way there's not an unused cmd line flag hanging around. :)

[ericrk, 2015/10/13 23:03:45]

I'll remove this then.

     ::switches::kDisablePreferCompositingToLCDText,
     ::switches::kEnablePrefixedEncryptedMedia,
     ::switches::kDisablePanelFitting,
     ::switches::kDisableRGBA4444Textures,
     ::switches::kDisableSeccompFilterSandbox,
     ::switches::kDisableSetuidSandbox,
     ::switches::kDisableSurfaces,
     ::switches::kDisableThreadedScrolling,
     ::switches::kDisableTouchDragDrop,
     ::switches::kDisableTouchEditing,
     ::switches::kDisableZeroCopy,
     ::switches::kEnableBlinkFeatures,
     ::switches::kEnableCompositorAnimationTimelines,
     ::switches::kDisableDisplayList2dCanvas,
     ::switches::kEnableDisplayList2dCanvas,
     ::switches::kForceDisplayList2dCanvas,
     ::switches::kDisableEncryptedMedia,
     ::switches::kDisableGpuSandbox,
     ::switches::kEnableDistanceFieldText,
     ::switches::kEnableGpuMemoryBufferVideoFrames,
     ::switches::kEnableGpuRasterization,
     ::switches::kEnableImageColorProfiles,
     ::switches::kEnableLogging,
     ::switches::kEnableLowResTiling,
-    ::switches::kEnablePersistentGpuMemoryBuffer,
+    ::switches::kEnablePartialRaster,
     ::switches::kEnablePinch,
     ::switches::kEnablePreferCompositingToLCDText,
     ::switches::kEnableRGBA4444Textures,
     ::switches::kEnableSlimmingPaintV2,
     ::switches::kEnableTouchDragDrop,
     ::switches::kEnableTouchEditing,
     ::switches::kEnableViewport,
     ::switches::kEnableZeroCopy,
 #if defined(USE_OZONE)
     ::switches::kExtraTouchNoiseFiltering,
@@ skipping 228 matching lines @@
     // Relaunch chrome without session manager on dev box.
     ReLaunch(command_line);
     return;
   }
 
   // ChromeRestartRequest deletes itself after request sent to session manager.
   (new ChromeRestartRequest(command_line.argv()))->Start();
 }
 
 }  // namespace chromeos