Make GrDrawTarget::Caps ref counted and GrGLCaps derive from it.

src/gpu/gl/GrGLBufferImpl.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrGLBufferImpl.h"
 #include "GrGpuGL.h"
 
@@ skipping 56 matching lines @@
         GrAssert(GR_GL_ELEMENT_ARRAY_BUFFER == fBufferType);
         gpu->bindIndexBufferAndDefaultVertexArray(fDesc.fID);
     }
 }
 
 void* GrGLBufferImpl::lock(GrGpuGL* gpu) {
     VALIDATE();
     GrAssert(!this->isLocked());
     if (0 == fDesc.fID) {
         fLockPtr = fCPUData;
-    } else if (gpu->getCaps().bufferLockSupport()) {
+    } else if (gpu->caps()->bufferLockSupport()) {
         this->bind(gpu);
         // Let driver know it can discard the old data
         GL_CALL(gpu, BufferData(fBufferType,
                                 fDesc.fSizeInBytes,
                                 NULL,
                                 fDesc.fDynamic ? DYNAMIC_USAGE_PARAM : GR_GL_STATIC_DRAW));
         GR_GL_CALL_RET(gpu->glInterface(),
                        fLockPtr,
                        MapBuffer(fBufferType, GR_GL_WRITE_ONLY));
     }
     return fLockPtr;
 }
 
 void GrGLBufferImpl::unlock(GrGpuGL* gpu) {
     VALIDATE();
     GrAssert(this->isLocked());
     if (0 != fDesc.fID) {
-        GrAssert(gpu->getCaps().bufferLockSupport());
+        GrAssert(gpu->caps()->bufferLockSupport());
         this->bind(gpu);
         GL_CALL(gpu, UnmapBuffer(fBufferType));
     }
     fLockPtr = NULL;
 }
 
 bool GrGLBufferImpl::isLocked() const {
     VALIDATE();
     return NULL != fLockPtr;
 }
@@ skipping 49 matching lines @@
 #endif
     return true;
 }
 
 void GrGLBufferImpl::validate() const {
     GrAssert(GR_GL_ARRAY_BUFFER == fBufferType || GR_GL_ELEMENT_ARRAY_BUFFER == fBufferType);
     GrAssert((0 == fDesc.fID) == (NULL != fCPUData));
     GrAssert(0 != fDesc.fID || !fDesc.fIsWrapped);
     GrAssert(NULL == fCPUData || NULL == fLockPtr || fCPUData == fLockPtr);
 }