Add missing break in switch-case statements in gles2_cmd_decoder

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 3b45922c697f3ca0a0dc16125a005582064c124a..2aa9b379c6a8132f6b6b06592244ab2f84558ce6 100644
--- a/gpu/command_buffer/service/gles2_cmd_decoder.cc
+++ b/gpu/command_buffer/service/gles2_cmd_decoder.cc
@@ -901,6 +901,13 @@ class GLES2DecoderImpl : public GLES2Decoder, public ErrorStateClient {
                            uint32* service_texture_id) override;
 
   uint32 GetTextureUploadCount() override;
+  // Methods added specifically for unit tests.
+  uint32 GetBackbufferClearBits() override {
+    return backbuffer_needs_clear_bits_;
+  }
+  void ClearBackbufferClearBits() override {
+    backbuffer_needs_clear_bits_ = 0;
+  }
   base::TimeDelta GetTotalTextureUploadTime() override;
   base::TimeDelta GetTotalProcessingCommandsTime() override;
   void AddProcessingCommandsTime(base::TimeDelta) override;
@@ -5154,6 +5161,7 @@ void GLES2DecoderImpl::DoDiscardFramebufferEXT(GLenum target,
           break;
         case GL_DEPTH_EXT:
           backbuffer_needs_clear_bits_ |= GL_DEPTH_BUFFER_BIT;
+          break;
         case GL_STENCIL_EXT:
           backbuffer_needs_clear_bits_ |= GL_STENCIL_BUFFER_BIT;
           break;
@@ -6481,6 +6489,7 @@ void GLES2DecoderImpl::DoGetRenderbufferParameteriv(
         glGetRenderbufferParameterivEXT(target, GL_RENDERBUFFER_SAMPLES_EXT,
             params);
       }
+      break;
     default:
       glGetRenderbufferParameterivEXT(target, pname, params);
       break;