gpu: Add missing ScopedRenderTo

gpu/command_buffer/service/gles2_cmd_decoder.cc

Index: gpu/command_buffer/service/gles2_cmd_decoder.cc
diff --git a/gpu/command_buffer/service/gles2_cmd_decoder.cc b/gpu/command_buffer/service/gles2_cmd_decoder.cc
index 20c4da8efce5dea9ded6e230dde087e69c9cf0b9..242f60546c51571451567615cb1b8329f4a50821 100644
--- a/gpu/command_buffer/service/gles2_cmd_decoder.cc
+++ b/gpu/command_buffer/service/gles2_cmd_decoder.cc
@@ -4366,6 +4366,7 @@ void GLES2DecoderImpl::DoDiscardFramebufferEXT(GLenum target,
     translated_attachments[i] = attachment;
   }
 
+  ScopedRenderTo do_render(framebuffer_state_.bound_draw_framebuffer.get());

[no sievers, 2014/10/16 18:53:18]

ScopedRenderTo do_render(framebuffer);

[boliu, 2014/10/16 19:04:50]

Done.

   glDiscardFramebufferEXT(target, numAttachments, translated_attachments.get());
 }
 
@@ -5007,6 +5008,7 @@ error::Error GLES2DecoderImpl::DoClear(GLbitfield mask) {
   DCHECK(!ShouldDeferDraws());
   if (CheckBoundFramebuffersValid("glClear")) {
     ApplyDirtyState();
+    ScopedRenderTo do_render(framebuffer_state_.bound_draw_framebuffer.get());
     glClear(mask);
   }
   return error::kNoError;
@@ -5308,6 +5310,7 @@ void GLES2DecoderImpl::DoBlitFramebufferCHROMIUM(
   }
 
   state_.SetDeviceCapabilityState(GL_SCISSOR_TEST, false);
+  ScopedRenderTo do_render(framebuffer_state_.bound_draw_framebuffer.get());
   BlitFramebufferHelper(
       srcX0, srcY0, srcX1, srcY1, dstX0, dstY0, dstX1, dstY1, mask, filter);
   state_.SetDeviceCapabilityState(GL_SCISSOR_TEST,