Complete disable_gl_rgb_format workaround for Mali-400 GPU

gpu/command_buffer/service/framebuffer_manager.cc

Index: gpu/command_buffer/service/framebuffer_manager.cc
diff --git a/gpu/command_buffer/service/framebuffer_manager.cc b/gpu/command_buffer/service/framebuffer_manager.cc
index 0b42bf5e267ce3045d4200c0fd2c468e5a4ca0a2..32c212ed0cf2dbcdf8908cebf28017c774a9bfb0 100644
--- a/gpu/command_buffer/service/framebuffer_manager.cc
+++ b/gpu/command_buffer/service/framebuffer_manager.cc
@@ -472,6 +472,15 @@ bool Framebuffer::HasStencilAttachment() const {
          attachments_.find(GL_STENCIL_ATTACHMENT) != attachments_.end();
 }
 
+GLenum Framebuffer::GetColorAttachmentFormat() const {

[Zhenyao Mo, 2016/02/12 21:06:06]

Name this GetColorAttachment0Format.

[halliwell, 2016/02/12 22:52:56]

Done.

+  AttachmentMap::const_iterator it = attachments_.find(GL_COLOR_ATTACHMENT0);
+  if (it == attachments_.end()) {
+    return 0;
+  }
+  const Attachment* attachment = it->second.get();
+  return attachment->internal_format();
+}
+
 GLenum Framebuffer::GetReadBufferInternalFormat() const {
   if (read_buffer_ == GL_NONE)
     return 0;