Removing GL context rate limiting feature and related wrappers

gpu/command_buffer/client/gles2_implementation.cc

Index: gpu/command_buffer/client/gles2_implementation.cc
diff --git a/gpu/command_buffer/client/gles2_implementation.cc b/gpu/command_buffer/client/gles2_implementation.cc
index de46cf4a5b32b44cbdf53303266ddbeec22d91c8..9350d31a50812f1ae4093c0992735cdcdbca0d10 100644
--- a/gpu/command_buffer/client/gles2_implementation.cc
+++ b/gpu/command_buffer/client/gles2_implementation.cc
@@ -4653,17 +4653,6 @@ void GLES2Implementation::RequestExtensionCHROMIUM(const char* extension) {
   }
 }
 
-void GLES2Implementation::RateLimitOffscreenContextCHROMIUM() {
-  GPU_CLIENT_SINGLE_THREAD_CHECK();
-  GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glRateLimitOffscreenCHROMIUM()");
-  // Wait if this would add too many rate limit tokens.
-  if (rate_limit_tokens_.size() == kMaxSwapBuffers) {
-    helper_->WaitForToken(rate_limit_tokens_.front());
-    rate_limit_tokens_.pop();
-  }
-  rate_limit_tokens_.push(helper_->InsertToken());
-}
-
 void GLES2Implementation::GetProgramInfoCHROMIUMHelper(
     GLuint program, std::vector<int8>* result) {
   DCHECK(result);