blink: Remove unused or rarely used methods from WebGraphicsContext3D

content/browser/android/in_process/context_provider_in_process.cc

Index: content/browser/android/in_process/context_provider_in_process.cc
diff --git a/content/browser/android/in_process/context_provider_in_process.cc b/content/browser/android/in_process/context_provider_in_process.cc
index 9f4fbc2d827bb9193850ec57cc09f2689b480ed3..f27734ac4ebf681fdc836a782ff9d5c272a4dde0 100644
--- a/content/browser/android/in_process/context_provider_in_process.cc
+++ b/content/browser/android/in_process/context_provider_in_process.cc
@@ -99,8 +99,7 @@ bool ContextProviderInProcess::BindToCurrentThread() {
 
   const std::string unique_context_name =
       base::StringPrintf("%s-%p", debug_name_.c_str(), WebContext3DImpl());
-  WebContext3DImpl()->traceBeginCHROMIUM("gpu_toplevel",
-                                 unique_context_name.c_str());
+  ContextGL()->TraceBeginCHROMIUM("gpu_toplevel", unique_context_name.c_str());
 
   lost_context_callback_proxy_.reset(new LostContextCallbackProxy(this));
   return true;