Add GL_CHROMIUM_framebuffer_multisample support to Chromium's...

chrome/renderer/webgraphicscontext3d_command_buffer_impl.cc

 // Copyright (c) 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #if defined(ENABLE_GPU)
 
 #include "chrome/renderer/webgraphicscontext3d_command_buffer_impl.h"
 
 #include <GLES2/gl2.h>
 #ifndef GL_GLEXT_PROTOTYPES
@@ skipping 369 matching lines @@
 WebKit::WebString WebGraphicsContext3DCommandBufferImpl::
     getRequestableExtensionsCHROMIUM() {
   return WebKit::WebString::fromUTF8(glGetRequestableExtensionsCHROMIUM());
 }
 
 void WebGraphicsContext3DCommandBufferImpl::requestExtensionCHROMIUM(
     const char* extension) {
   glRequestExtensionCHROMIUM(extension);
 }
 
+void WebGraphicsContext3DCommandBufferImpl::blitFramebufferCHROMIUM(
+    int srcX0, int srcY0, int srcX1, int srcY1,
+    int dstX0, int dstY0, int dstX1, int dstY1,
+    unsigned mask, unsigned filter) {
+  glBlitFramebufferEXT(srcX0, srcY0, srcX1, srcY1,
+                       dstX0, dstY0, dstX1, dstY1,
+                       mask, filter);
+}
+
+void WebGraphicsContext3DCommandBufferImpl::
+    renderbufferStorageMultisampleCHROMIUM(
+        unsigned long target, int samples, unsigned internalformat,
+        unsigned width, unsigned height) {
+  glRenderbufferStorageMultisampleEXT(target, samples, internalformat,
+                                      width, height);
+}
+
 // Helper macros to reduce the amount of code.
 
 #define DELEGATE_TO_GL(name, glname)                                    \
 void WebGraphicsContext3DCommandBufferImpl::name() {                    \
   makeContextCurrent();                                                 \
   gl##glname();                                                         \
 }
 
 #define DELEGATE_TO_GL_1(name, glname, t1)                              \
 void WebGraphicsContext3DCommandBufferImpl::name(t1 a1) {               \
@@ skipping 636 matching lines @@
 
 void WebGraphicsContext3DCommandBufferImpl::OnSwapBuffers() {
   // This may be called after tear-down of the RenderView.
   RenderView* renderview =
       web_view_ ? RenderView::FromWebView(web_view_) : NULL;
   if (renderview)
     renderview->DidFlushPaint();
 }
 
 #endif  // defined(ENABLE_GPU)