Allow retrieval of updated bitmaps in thumbnails.

chrome/browser/android/thumbnail/thumbnail.cc

 // Copyright 2014 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 "base/logging.h"
 #include "chrome/browser/android/thumbnail/thumbnail.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "third_party/skia/include/core/SkCanvas.h"
 #include "ui/android/resources/ui_resource_provider.h"
 #include "ui/gfx/geometry/size_conversions.h"
@@ skipping 36 matching lines @@
       ui_resource_provider_(ui_resource_provider),
       thumbnail_delegate_(thumbnail_delegate) {
 }
 
 Thumbnail::~Thumbnail() {
   ClearUIResourceId();
 }
 
 void Thumbnail::SetBitmap(const SkBitmap& bitmap) {
   DCHECK(!bitmap.empty());
+  retrieved_ = false;
   ClearUIResourceId();
   scaled_content_size_ =
       gfx::ScaleSize(gfx::Size(bitmap.width(), bitmap.height()), 1.f / scale_);
   scaled_data_size_ = scaled_content_size_;
   bitmap_ = cc::UIResourceBitmap(bitmap);
 }
 
 void Thumbnail::SetCompressedBitmap(skia::RefPtr<SkPixelRef> compressed_bitmap,
                                     const gfx::Size& content_size) {
   DCHECK(compressed_bitmap);
   DCHECK(!content_size.IsEmpty());
+  retrieved_ = false;
   ClearUIResourceId();
   gfx::Size data_size(compressed_bitmap->info().width(),
                       compressed_bitmap->info().height());
   scaled_content_size_ = gfx::ScaleSize(content_size, 1.f / scale_);
   scaled_data_size_ = gfx::ScaleSize(data_size, 1.f / scale_);
   bitmap_ = cc::UIResourceBitmap(compressed_bitmap, data_size);
 }
 
 void Thumbnail::CreateUIResource() {
   DCHECK(ui_resource_provider_);
@@ skipping 18 matching lines @@
   ui_resource_id_ = 0;
   if (thumbnail_delegate_)
     thumbnail_delegate_->InvalidateCachedThumbnail(this);
 }
 
 void Thumbnail::ClearUIResourceId() {
   if (ui_resource_id_ && ui_resource_provider_)
     ui_resource_provider_->DeleteUIResource(ui_resource_id_);
   ui_resource_id_ = 0;
 }