Fix blits from multisampled renderbuffers to alpha:false WebGL back buffer.

gpu/command_buffer/service/gles2_cmd_decoder_passthrough_doer_prototypes.h

 // Copyright (c) 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 error::Error DoActiveTexture(GLenum texture);
 error::Error DoAttachShader(GLuint program, GLuint shader);
 error::Error DoBindAttribLocation(GLuint program,
                                   GLuint index,
                                   const char* name);
 error::Error DoBindBuffer(GLenum target, GLuint buffer);
@@ skipping 778 matching lines @@
                                             const volatile GLbyte* mailbox);
 error::Error DoConsumeTextureCHROMIUM(GLenum target,
                                       const volatile GLbyte* mailbox);
 error::Error DoCreateAndConsumeTextureINTERNAL(GLenum target,
                                                GLuint texture_client_id,
                                                const volatile GLbyte* mailbox);
 error::Error DoBindUniformLocationCHROMIUM(GLuint program,
                                            GLint location,
                                            const char* name);
 error::Error DoBindTexImage2DCHROMIUM(GLenum target, GLint imageId);
+error::Error DoBindTexImage2DWithInternalformatCHROMIUM(GLenum target,
+                                                        GLenum internalformat,
+                                                        GLint imageId);
 error::Error DoReleaseTexImage2DCHROMIUM(GLenum target, GLint imageId);
 error::Error DoTraceBeginCHROMIUM(const char* category_name,
                                   const char* trace_name);
 error::Error DoTraceEndCHROMIUM();
 error::Error DoDiscardFramebufferEXT(GLenum target,
                                      GLsizei count,
                                      const volatile GLenum* attachments);
 error::Error DoLoseContextCHROMIUM(GLenum current, GLenum other);
 error::Error DoDescheduleUntilFinishedCHROMIUM();
 error::Error DoInsertFenceSyncCHROMIUM(GLuint64 release_count);
@@ skipping 163 matching lines @@
 
 error::Error DoOverlayPromotionHintCHROMIUM(GLuint texture,
                                             GLboolean promotion_hint,
                                             GLint display_x,
                                             GLint display_y);
 error::Error DoSetDrawRectangleCHROMIUM(GLint x,
                                         GLint y,
                                         GLint width,
                                         GLint height);
 error::Error DoSetEnableDCLayersCHROMIUM(GLboolean enable);