Remove the command buffer method glGetImageivCHROMIUM.

third_party/WebKit/Source/platform/graphics/gpu/DrawingBufferTest.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 90 matching lines @@
     {
         return GL_FRAMEBUFFER_COMPLETE;
     }
 
     void GetIntegerv(GLenum pname, GLint* value) override
     {
         if (pname == GL_MAX_TEXTURE_SIZE)
             *value = 1024;
     }
 
-    void GetImageivCHROMIUM(GLuint imageId, GLenum pname, GLint* data) override
-    {
-        if (pname == GC3D_GPU_MEMORY_BUFFER_ID)
-            *data = 1;
-        else
-            *data = -1;
-    }
-
     void GenMailboxCHROMIUM(GLbyte* mailbox) override
     {
         ++m_currentMailboxByte;
         WebExternalTextureMailbox temp;
         memset(mailbox, m_currentMailboxByte, sizeof(temp.name));
     }
 
     void ProduceTextureDirectCHROMIUM(GLuint texture, GLenum target, const GLbyte* mailbox) override
     {
         ASSERT_EQ(target, drawingBufferTextureTarget());
@@ skipping 650 matching lines @@
     // m_drawingBuffer deletes mailbox immediately when hidden.
 
     GLuint waitSyncToken = 0;
     memcpy(&waitSyncToken, mailbox.syncToken, sizeof(waitSyncToken));
     EXPECT_EQ(waitSyncToken, m_gl->mostRecentlyWaitedSyncToken());
 
     m_drawingBuffer->beginDestruction();
 }
 
 } // namespace blink