Add better support for RGBA_4444 textures.

content/public/common/content_switches.cc

Index: content/public/common/content_switches.cc
diff --git a/content/public/common/content_switches.cc b/content/public/common/content_switches.cc
index 1189c655625c8d71368dfbef7c54f341b9eb7cab..1914510d8eff79a010cb6d483f9214f6b8aa4cd4 100644
--- a/content/public/common/content_switches.cc
+++ b/content/public/common/content_switches.cc
@@ -216,6 +216,9 @@ const char kDisablePinch[]                  = "disable-pinch";
 // --extra-plugin-dir and --load-plugin switches.
 const char kDisablePluginsDiscovery[]       = "disable-plugins-discovery";
 
+// Disables RGBA_4444 textures.
+const char kDisableRGBA4444Textures[] = "disable-rgba-4444-textures";
+
 // Taints all <canvas> elements, regardless of origin.
 const char kDisableReadingFromCanvas[]      = "disable-reading-from-canvas";
 
@@ -398,6 +401,9 @@ const char kEnablePreciseMemoryInfo[] = "enable-precise-memory-info";
 // Enables payloads for received push messages when using the W3C Push API.
 const char kEnablePushMessagePayload[] = "enable-push-message-payload";
 
+// Enables RGBA_4444 textures.
+const char kEnableRGBA4444Textures[] = "enable-rgba-4444-textures";
+
 // Set options to cache V8 data. (off, preparse data, or code)
 const char kV8CacheOptions[] = "v8-cache-options";