cc: Adding support for RGBA_4444 tile textures

cc/output/software_renderer_unittest.cc

Index: cc/output/software_renderer_unittest.cc
diff --git a/cc/output/software_renderer_unittest.cc b/cc/output/software_renderer_unittest.cc
index 6f61525418283f848b3075e3cfd78b8e34c883ec..e86d2134da101b6b90400df430b1c49d60a16d1f 100644
--- a/cc/output/software_renderer_unittest.cc
+++ b/cc/output/software_renderer_unittest.cc
@@ -124,13 +124,15 @@ TEST_F(SoftwareRendererTest, TileQuad) {
   InitializeRenderer(make_scoped_ptr(new SoftwareOutputDevice));
 
   ResourceProvider::ResourceId resource_yellow =
-      resource_provider()->CreateResource(
-          outer_size, GL_RGBA, GL_CLAMP_TO_EDGE,
-          ResourceProvider::TextureUsageAny);
+      resource_provider()->CreateResource(outer_size,
+                                          GL_CLAMP_TO_EDGE,
+                                          ResourceProvider::TextureUsageAny,
+                                          RGBA_8888);
   ResourceProvider::ResourceId resource_cyan =
-      resource_provider()->CreateResource(
-          inner_size, GL_RGBA, GL_CLAMP_TO_EDGE,
-          ResourceProvider::TextureUsageAny);
+      resource_provider()->CreateResource(inner_size,
+                                          GL_CLAMP_TO_EDGE,
+                                          ResourceProvider::TextureUsageAny,
+                                          RGBA_8888);
 
   SkBitmap yellow_tile;
   yellow_tile.setConfig(
@@ -214,9 +216,10 @@ TEST_F(SoftwareRendererTest, TileQuadVisibleRect) {
   InitializeRenderer(make_scoped_ptr(new SoftwareOutputDevice));
 
   ResourceProvider::ResourceId resource_cyan =
-      resource_provider()->CreateResource(
-          tile_size, GL_RGBA, GL_CLAMP_TO_EDGE,
-          ResourceProvider::TextureUsageAny);
+      resource_provider()->CreateResource(tile_size,
+                                          GL_CLAMP_TO_EDGE,
+                                          ResourceProvider::TextureUsageAny,
+                                          RGBA_8888);
 
   SkBitmap cyan_tile;  // The lowest five rows are yellow.
   cyan_tile.setConfig(