Enforce RGB even on buggy drivers.

gpu/command_buffer/service/gles2_cmd_decoder_unittest_1.cc

Index: gpu/command_buffer/service/gles2_cmd_decoder_unittest_1.cc
diff --git a/gpu/command_buffer/service/gles2_cmd_decoder_unittest_1.cc b/gpu/command_buffer/service/gles2_cmd_decoder_unittest_1.cc
index 9497dbcf072594fd85e283cd94b06328fab9de18..dc086f3e28edcfa7007ad2f67d076583d2aad255 100644
--- a/gpu/command_buffer/service/gles2_cmd_decoder_unittest_1.cc
+++ b/gpu/command_buffer/service/gles2_cmd_decoder_unittest_1.cc
@@ -59,6 +59,22 @@ void GLES2DecoderTestBase::SpecializedSetup<CheckFramebufferStatus, 0>(
 };
 
 template <>
+void GLES2DecoderTestBase::SpecializedSetup<Clear, 0>(bool valid) {
+  if (valid) {
+    SetupExpectationsForApplyingDefaultDirtyState();
+  }
+};
+
+template <>
+void GLES2DecoderTestBase::SpecializedSetup<ColorMask, 0>(
+    bool /* valid */) {
+  // We bind a framebuffer color the colormask test since the framebuffer
+  // will be considered RGB.
+  DoBindFramebuffer(GL_FRAMEBUFFER, client_framebuffer_id_,
+                    kServiceFramebufferId);
+};
+
+template <>
 void GLES2DecoderTestBase::SpecializedSetup<CopyTexImage2D, 0>(
     bool valid) {
   if (valid) {