Added PPB_Graphics3D_Dev::Resize to let plugins resize the backing surface.

ppapi/shared_impl/graphics_3d_impl.cc

 // Copyright (c) 2011 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 "ppapi/shared_impl/graphics_3d_impl.h"
 
 #include "base/logging.h"
 #include "gpu/command_buffer/client/gles2_cmd_helper.h"
 #include "gpu/command_buffer/client/gles2_implementation.h"
 #include "ppapi/c/pp_errors.h"
@@ skipping 15 matching lines @@
 int32_t Graphics3DImpl::GetAttribs(int32_t* attrib_list) {
   // TODO(alokp): Implement me.
   return PP_ERROR_FAILED;
 }
 
 int32_t Graphics3DImpl::SetAttribs(int32_t* attrib_list) {
   // TODO(alokp): Implement me.
   return PP_ERROR_FAILED;
 }
 
+int32_t Graphics3DImpl::ResizeBuffers(int32_t width, int32_t height) {
+  if ((width < 0) || (height < 0))
+    return PP_ERROR_BADARGUMENT;
+
+  gles2_impl()->ResizeCHROMIUM(width, height);
+  // TODO(alokp): Check if resize succeeded and return appropriate error code.
+  return PP_OK;
+}
+
 int32_t Graphics3DImpl::SwapBuffers(PP_CompletionCallback callback) {
   if (!callback.func) {
     // Blocking SwapBuffers isn't supported (since we have to be on the main
     // thread).
     return PP_ERROR_BADARGUMENT;
   }
 
   if (HasPendingSwap()) {
     // Already a pending SwapBuffers that hasn't returned yet.
     return PP_ERROR_INPROGRESS;
@@ skipping 50 matching lines @@
     DCHECK(command_buffer);
     command_buffer->DestroyTransferBuffer(transfer_buffer_id_);
     transfer_buffer_id_ = -1;
   }
 
   gles2_helper_.reset();
 }
 
 }  // namespace ppapi