cc: Prevent ResourceUpdateContoller from uploading textures after lost context

cc/resources/resource_provider.h

 // 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.
 
 #ifndef CC_RESOURCES_RESOURCE_PROVIDER_H_
 #define CC_RESOURCES_RESOURCE_PROVIDER_H_
 
 #include <deque>
 #include <set>
 #include <string>
@@ skipping 120 matching lines @@
   // the resource).
   void SetPixels(ResourceId id,
                  const uint8_t* image,
                  gfx::Rect image_rect,
                  gfx::Rect source_rect,
                  gfx::Vector2d dest_offset);
 
   // Check upload status.
   size_t NumBlockingUploads();
   void MarkPendingUploadsAsNonBlocking();
-  double EstimatedUploadsPerSecond();
+  size_t EstimatedUploadsPerTick();
   void FlushUploads();
   void ReleaseCachedData();
-  base::TimeDelta TextureUpdateTickRate();
+  base::TimeTicks EstimatedUploadCompletionTime(size_t uploads_per_tick);
 
   // Flush all context operations, kicking uploads and ensuring ordering with
   // respect to other contexts.
   void Flush();
 
   // Finish all context operations, causing any pending callbacks to be
   // scheduled.
   void Finish();
 
   // Only flush the command buffer if supported.
@@ skipping 393 matching lines @@
   return format_gl_data_format[format];
 }
 
 inline GLenum GLInternalFormat(ResourceFormat format) {
   return GLDataFormat(format);
 }
 
 }  // namespace cc
 
 #endif  // CC_RESOURCES_RESOURCE_PROVIDER_H_