Remove --enable-per-tile-painting and --ui-enable-per-tile-painting.

The ui flag is always true on ChromeOS and off elsewhere. The other is
never on and we're not planning to turn it on.

R=piman
BUG=

Review URL: https://codereview.chromium.org/164183012

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@251538 0039d316-1c4b-4281-b951-d872f2087c98

cc/base/switches.cc

@@ -86,9 +86,6 @@ const char kEnablePartialSwap[] = "enable-partial-swap";
 // Disable partial swap which is needed for some OpenGL drivers / emulators.
 const char kUIDisablePartialSwap[] = "ui-disable-partial-swap";
 
-const char kEnablePerTilePainting[] = "enable-per-tile-painting";
-const char kUIEnablePerTilePainting[] = "ui-enable-per-tile-painting";
-
 // Enables the GPU benchmarking extension
 const char kEnableGpuBenchmarking[] = "enable-gpu-benchmarking";
 

cc/base/switches.h

@@ -45,8 +45,6 @@ CC_EXPORT extern const char kDisableCompositorTouchHitTesting[];
 
 // Switches for both the renderer and ui compositors.
 CC_EXPORT extern const char kUIDisablePartialSwap[];
-CC_EXPORT extern const char kEnablePerTilePainting[];
-CC_EXPORT extern const char kUIEnablePerTilePainting[];
 CC_EXPORT extern const char kEnableGpuBenchmarking[];
 
 // Debug visualizations.

chrome/browser/about_flags.cc

@@ -876,13 +876,6 @@ const Experiment kExperiments[] = {
     kOsDesktop,
     SINGLE_VALUE_TYPE(switches::kDisableVp8AlphaPlayback)
   },
-  {
-    "per-tile-painting",
-    IDS_FLAGS_PER_TILE_PAINTING_NAME,
-    IDS_FLAGS_PER_TILE_PAINTING_DESCRIPTION,
-    kOsMac | kOsLinux | kOsCrOS,
-    SINGLE_VALUE_TYPE(cc::switches::kEnablePerTilePainting)
-  },
   {
     "enable-javascript-harmony",
     IDS_FLAGS_ENABLE_JAVASCRIPT_HARMONY_NAME,

chrome/browser/chromeos/login/chrome_restart_request.cc

@@ -180,7 +180,6 @@ std::string DeriveCommandLine(const GURL& start_url,
       cc::switches::kEnableImplSidePainting,
       cc::switches::kEnableMapImage,
       cc::switches::kEnablePartialSwap,
-      cc::switches::kEnablePerTilePainting,
       cc::switches::kEnablePinchVirtualViewport,
       cc::switches::kEnableTopControlsPositionCalculation,
       cc::switches::kMaxTilesForInterestArea,
@@ -197,7 +196,6 @@ std::string DeriveCommandLine(const GURL& start_url,
       cc::switches::kSlowDownRasterScaleFactor,
       cc::switches::kTraceOverdraw,
       cc::switches::kUIDisablePartialSwap,
-      cc::switches::kUIEnablePerTilePainting,
       chromeos::switches::kDbusStub,
       chromeos::switches::kDisableLoginAnimations,
       chromeos::switches::kDisableOobeAnimation,

content/browser/renderer_host/render_process_host_impl.cc

@@ -1113,7 +1113,6 @@ void RenderProcessHostImpl::PropagateBrowserCommandLineToRenderer(
     cc::switches::kEnableLCDText,
     cc::switches::kEnableMapImage,
     cc::switches::kEnablePartialSwap,
-    cc::switches::kEnablePerTilePainting,
     cc::switches::kEnablePinchVirtualViewport,
     cc::switches::kEnableTopControlsPositionCalculation,
     cc::switches::kMaxTilesForInterestArea,

content/renderer/gpu/render_widget_compositor.cc

@@ -95,8 +95,6 @@ scoped_ptr<RenderWidgetCompositor> RenderWidgetCompositor::Create(
       !cmd->HasSwitch(switches::kDisableDeadlineScheduling);
   settings.using_synchronous_renderer_compositor =
       widget->UsingSynchronousRendererCompositor();
-  settings.per_tile_painting_enabled =
-      cmd->HasSwitch(cc::switches::kEnablePerTilePainting);
   settings.accelerated_animation_enabled =
       !cmd->HasSwitch(cc::switches::kDisableThreadedAnimation);
   settings.touch_hit_testing =

ui/compositor/compositor.cc

@@ -213,8 +213,9 @@ Compositor::Compositor(gfx::AcceleratedWidget widget)
       switches::IsUIDeadlineSchedulingEnabled();
   settings.partial_swap_enabled =
       !command_line->HasSwitch(cc::switches::kUIDisablePartialSwap);
-  settings.per_tile_painting_enabled =
-      command_line->HasSwitch(cc::switches::kUIEnablePerTilePainting);
+#if defined(OS_CHROMEOS)
+  settings.per_tile_painting_enabled = true;
+#endif
 
   // These flags should be mirrored by renderer versions in content/renderer/.
   settings.initial_debug_state.show_debug_borders =