Revert 171403

cc/gl_renderer.cc

 // Copyright 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.
 
 #include "cc/gl_renderer.h"
 
 #include "base/debug/trace_event.h"
 #include "base/logging.h"
 #include "base/string_split.h"
 #include "base/string_util.h"
@@ skipping 84 matching lines @@
     std::vector<std::string> extensionsList;
     base::SplitString(extensionsString, ' ', &extensionsList);
     std::set<string> extensions(extensionsList.begin(), extensionsList.end());
 
     if (settings().acceleratePainting && extensions.count("GL_EXT_texture_format_BGRA8888")
                                       && extensions.count("GL_EXT_read_format_bgra"))
         m_capabilities.usingAcceleratedPainting = true;
     else
         m_capabilities.usingAcceleratedPainting = false;
 
+
+    m_capabilities.contextHasCachedFrontBuffer = extensions.count("GL_CHROMIUM_front_buffer_cached");
+
     m_capabilities.usingPartialSwap = settings().partialSwapEnabled && extensions.count("GL_CHROMIUM_post_sub_buffer");
 
     // Use the swapBuffers callback only with the threaded proxy.
     if (m_client->hasImplThread())
         m_capabilities.usingSwapCompleteCallback = extensions.count("GL_CHROMIUM_swapbuffers_complete_callback");
     if (m_capabilities.usingSwapCompleteCallback)
         m_context->setSwapBuffersCompleteCallbackCHROMIUM(this);
 
     m_capabilities.usingSetVisibility = extensions.count("GL_CHROMIUM_set_visibility");
 
@@ skipping 1228 matching lines @@
 
     if (!m_capabilities.usingDiscardFramebuffer)
         return;
 
     m_context->ensureFramebufferCHROMIUM();
     m_isFramebufferDiscarded = false;
 }
 
 void GLRenderer::onContextLost()
 {
-    m_client->didLoseOutputSurface();
+    m_client->didLoseContext();
 }
 
 
 void GLRenderer::getFramebufferPixels(void *pixels, const gfx::Rect& rect)
 {
     DCHECK(rect.right() <= viewportWidth());
     DCHECK(rect.bottom() <= viewportHeight());
 
     if (!pixels)
         return;
@@ skipping 384 matching lines @@
 
     releaseRenderPassTextures();
 }
 
 bool GLRenderer::isContextLost()
 {
     return (m_context->getGraphicsResetStatusARB() != GL_NO_ERROR);
 }
 
 }  // namespace cc