Turn on GPU rasterization when --enable-bleeding-edge-rendering-fast-paths is true.

BUG=

Review URL: https://codereview.chromium.org/168183004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@255155 0039d316-1c4b-4281-b951-d872f2087c98

content/renderer/gpu/render_widget_compositor.cc

@@ -127,7 +127,9 @@ scoped_ptr<RenderWidgetCompositor> RenderWidgetCompositor::Create(
                                            max_untiled_layer_height);
 
   settings.impl_side_painting = cc::switches::IsImplSidePaintingEnabled();
-  settings.gpu_rasterization = cc::switches::IsGpuRasterizationEnabled();
+  settings.gpu_rasterization =
+      cc::switches::IsGpuRasterizationEnabled() ||
+      cmd->HasSwitch(switches::kEnableBleedingEdgeRenderingFastPaths);
 
   settings.calculate_top_controls_position =
       cmd->HasSwitch(cc::switches::kEnableTopControlsPositionCalculation);