GPU process clients can perform a "shallow" finish.

gpu/command_buffer/client/gles2_trace_implementation_impl_autogen.h

Index: gpu/command_buffer/client/gles2_trace_implementation_impl_autogen.h
===================================================================
--- gpu/command_buffer/client/gles2_trace_implementation_impl_autogen.h	(revision 207109)
+++ gpu/command_buffer/client/gles2_trace_implementation_impl_autogen.h	(working copy)
@@ -267,11 +267,6 @@
   gl_->Flush();
 }
 
-void GLES2TraceImplementation::ShallowFlushCHROMIUM() {
-  TRACE_EVENT_BINARY_EFFICIENT0("gpu", "GLES2Trace::ShallowFlushCHROMIUM");
-  gl_->ShallowFlushCHROMIUM();
-}
-
 void GLES2TraceImplementation::FramebufferRenderbuffer(
     GLenum target, GLenum attachment, GLenum renderbuffertarget,
     GLuint renderbuffer) {
@@ -576,6 +571,16 @@
   gl_->ShaderSource(shader, count, str, length);
 }
 
+void GLES2TraceImplementation::ShallowFinishCHROMIUM() {
+  TRACE_EVENT_BINARY_EFFICIENT0("gpu", "GLES2Trace::ShallowFinishCHROMIUM");
+  gl_->ShallowFinishCHROMIUM();
+}
+
+void GLES2TraceImplementation::ShallowFlushCHROMIUM() {
+  TRACE_EVENT_BINARY_EFFICIENT0("gpu", "GLES2Trace::ShallowFlushCHROMIUM");
+  gl_->ShallowFlushCHROMIUM();
+}
+
 void GLES2TraceImplementation::StencilFunc(
     GLenum func, GLint ref, GLuint mask) {
   TRACE_EVENT_BINARY_EFFICIENT0("gpu", "GLES2Trace::StencilFunc");