cc: Fix build issues for adding ‘chromium_code’: 1 to cc.gyp and cc_tests.gyp

cc/output/output_surface.cc

 // Copyright (c) 2013 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/output/output_surface.h"
 
 #include <set>
 #include <string>
 #include <vector>
 
@@ skipping 46 matching lines @@
     return true;
   if (!context3d_->makeContextCurrent())
     return false;
 
   string extensions_string = UTF16ToASCII(context3d_->getString(GL_EXTENSIONS));
   vector<string> extensions_list;
   base::SplitString(extensions_string, ' ', &extensions_list);
   set<string> extensions(extensions_list.begin(), extensions_list.end());
 
   has_gl_discard_backbuffer_ =
-      extensions.count("GL_CHROMIUM_discard_backbuffer");
+      extensions.count("GL_CHROMIUM_discard_backbuffer") > 0;
 
   return true;
 }
 
 void OutputSurface::SendFrameToParentCompositor(CompositorFrame* frame) {
   NOTIMPLEMENTED();
 }
 
 void OutputSurface::EnsureBackbuffer() {
   DCHECK(context3d_);
@@ skipping 24 matching lines @@
   context3d_->prepareTexture();
 }
 
 void OutputSurface::PostSubBuffer(gfx::Rect rect) {
   DCHECK(context3d_);
   context3d_->postSubBufferCHROMIUM(
       rect.x(), rect.y(), rect.width(), rect.height());
 }
 
 }  // namespace cc