Add CC software renderer.

cc/CCResourceProvider.cpp

 // Copyright 2012 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 "config.h"
 
 #include "CCResourceProvider.h"
 #ifdef LOG
 #undef LOG
 #endif
@@ skipping 434 matching lines @@
     , m_useShallowFlush(false)
     , m_maxTextureSize(0)
 {
 }
 
 bool CCResourceProvider::initialize()
 {
     ASSERT(CCProxy::isImplThread());
     WebGraphicsContext3D* context3d = m_context->context3D();
     if (!context3d) {
-        m_maxTextureSize = INT_MAX;
+        m_maxTextureSize = INT_MAX / 2;
         m_textureUploader = UnthrottledTextureUploader::create();
-
-        // FIXME: Implement this path for software compositing.
-        return false;
+        return true;
     }
     if (!context3d->makeContextCurrent())
         return false;
 
     std::string extensionsString = UTF16ToASCII(context3d->getString(GraphicsContext3D::EXTENSIONS));
     std::vector<std::string> extensions;
     base::SplitString(extensionsString, ' ', &extensions);
     bool useMapSub = false;
     bool useBindUniform = false;
     for (size_t i = 0; i < extensions.size(); ++i) {
@@ skipping 228 matching lines @@
             if (childPoolSet.contains(it->second.pool))
 #endif
                 ++maxMailboxCount;
         }
     }
     while (m_mailboxes.size() > maxMailboxCount)
         m_mailboxes.removeFirst();
 }
 
 }