Exposed support for dynamically enabling extensions in command buffer...

chrome/renderer/webgraphicscontext3d_command_buffer_impl.cc

Index: chrome/renderer/webgraphicscontext3d_command_buffer_impl.cc
===================================================================
--- chrome/renderer/webgraphicscontext3d_command_buffer_impl.cc	(revision 68245)
+++ chrome/renderer/webgraphicscontext3d_command_buffer_impl.cc	(working copy)
@@ -90,7 +90,7 @@
   GPUInfo gpu_info = host->gpu_info();
   UMA_HISTOGRAM_ENUMERATION(
       "GPU.WebGraphicsContext3D_Init_CanLoseContext",
-      attributes.canRecoverFromContextLoss * 2 + gpu_info.can_lose_context(), 
+      attributes.canRecoverFromContextLoss * 2 + gpu_info.can_lose_context(),
       4);
   if (attributes.canRecoverFromContextLoss == false) {
     if (gpu_info.can_lose_context())
@@ -371,6 +371,16 @@
   copyTextureToCompositor(texture, parentTexture);
 }
 
+WebKit::WebString WebGraphicsContext3DCommandBufferImpl::
+    getRequestableExtensionsCHROMIUM() {
+  return WebKit::WebString::fromUTF8(glGetRequestableExtensionsCHROMIUM());
+}
+
+void WebGraphicsContext3DCommandBufferImpl::requestExtensionCHROMIUM(
+    const char* extension) {
+  glRequestExtensionCHROMIUM(extension);
+}
+
 // Helper macros to reduce the amount of code.
 
 #define DELEGATE_TO_GL(name, glname)                                    \