gpu: Add CHROMIUM_copy_image extension.

gpu/command_buffer/client/gles2_implementation_impl_autogen.h

Index: gpu/command_buffer/client/gles2_implementation_impl_autogen.h
diff --git a/gpu/command_buffer/client/gles2_implementation_impl_autogen.h b/gpu/command_buffer/client/gles2_implementation_impl_autogen.h
index e10aa498039a6d4e168cffcb1bf7146efb361b7e..fe6bc010d62b41d993d16bda663aa6e65d40f5d1 100644
--- a/gpu/command_buffer/client/gles2_implementation_impl_autogen.h
+++ b/gpu/command_buffer/client/gles2_implementation_impl_autogen.h
@@ -3218,6 +3218,36 @@ void GLES2Implementation::ReleaseTexImage2DCHROMIUM(GLenum target,
   CheckGLError();
 }
 
+void GLES2Implementation::CopyImageSubDataCHROMIUM(GLint source_image_id,
+                                                   GLint dest_texture_id,
+                                                   GLint xoffset,
+                                                   GLint yoffset,
+                                                   GLint x,
+                                                   GLint y,
+                                                   GLsizei width,
+                                                   GLsizei height,
+                                                   GLint in_fence_id,
+                                                   GLint out_fence_id) {
+  GPU_CLIENT_SINGLE_THREAD_CHECK();
+  GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glCopyImageSubDataCHROMIUM("
+                     << source_image_id << ", " << dest_texture_id << ", "
+                     << xoffset << ", " << yoffset << ", " << x << ", " << y
+                     << ", " << width << ", " << height << ", " << in_fence_id
+                     << ", " << out_fence_id << ")");
+  if (width < 0) {
+    SetGLError(GL_INVALID_VALUE, "glCopyImageSubDataCHROMIUM", "width < 0");
+    return;
+  }
+  if (height < 0) {
+    SetGLError(GL_INVALID_VALUE, "glCopyImageSubDataCHROMIUM", "height < 0");
+    return;
+  }
+  helper_->CopyImageSubDataCHROMIUM(source_image_id, dest_texture_id, xoffset,
+                                    yoffset, x, y, width, height, in_fence_id,
+                                    out_fence_id);
+  CheckGLError();
+}
+
 void GLES2Implementation::DiscardFramebufferEXT(GLenum target,
                                                 GLsizei count,
                                                 const GLenum* attachments) {