Added preliminary support for tile rasterization with Ganesh

cc/base/switches.cc

Index: cc/base/switches.cc
diff --git a/cc/base/switches.cc b/cc/base/switches.cc
index be4a2c55adfbcb22214a0a92439f59da8fd112e2..3ec503dd6ff8c6a6424d7473c219e4f7c03629a8 100644
--- a/cc/base/switches.cc
+++ b/cc/base/switches.cc
@@ -151,6 +151,9 @@ const char kDisable4444Textures[] = "disable-4444-textures";
 const char kDisableCompositorTouchHitTesting[] =
     "disable-compositor-touch-hit-testing";
 
+// Enable tile rasterization with Ganesh.
+const char kEnableGpuRasterizing[] = "enable-gpu-rasterizing";
+
 bool IsLCDTextEnabled() {
   const CommandLine* command_line = CommandLine::ForCurrentProcess();
   if (command_line->HasSwitch(cc::switches::kDisableLCDText))
@@ -198,5 +201,10 @@ bool IsMapImageEnabled() {
   return false;
 }
 
+bool IsGpuRasterizingEnabled() {

[reveman, 2013/11/24 21:56:57]

Do we need this helper function when it just returns the value of
HasSwitch(cc::switches::kEnableGpuRasterizing)?

[slavi, 2013/11/25 23:13:14]

Also removed. See humper's patch.

+  const CommandLine& command_line = *CommandLine::ForCurrentProcess();
+  return command_line.HasSwitch(cc::switches::kEnableGpuRasterizing);
+}
+
 }  // namespace switches
 }  // namespace cc