Replace RectVectors with SkRegions in Decoder.

remoting/client/rectangle_update_decoder.cc

Index: remoting/client/rectangle_update_decoder.cc
diff --git a/remoting/client/rectangle_update_decoder.cc b/remoting/client/rectangle_update_decoder.cc
index 3ce8b651bb7a3eafa10d86ac0ab55440041e1e05..673c2a037061f78d23afbd4c916b6c5995e750a7 100644
--- a/remoting/client/rectangle_update_decoder.cc
+++ b/remoting/client/rectangle_update_decoder.cc
@@ -140,7 +140,7 @@ void RectangleUpdateDecoder::SetOutputSize(const SkISize& size) {
   // TODO(wez): Refresh the frame only if the ratio has changed.
   if (frame_) {
     SkIRect frame_rect = SkIRect::MakeWH(frame_->width(), frame_->height());
-    refresh_rects_.push_back(frame_rect);
+    refresh_region_.op(frame_rect, SkRegion::kUnion_Op);
   }
 
   // TODO(hclam): If the scale ratio has changed we should reallocate a
@@ -166,7 +166,7 @@ void RectangleUpdateDecoder::UpdateClipRect(const SkIRect& new_clip_rect) {
   // TODO(wez): Only refresh newly-exposed portions of the frame.
   if (frame_) {
     SkIRect frame_rect = SkIRect::MakeWH(frame_->width(), frame_->height());
-    refresh_rects_.push_back(frame_rect);
+    refresh_region_.op(frame_rect, SkRegion::kUnion_Op);
   }
 
   clip_rect_ = new_clip_rect;
@@ -188,9 +188,9 @@ void RectangleUpdateDecoder::RefreshFullFrame() {
   if (!frame_ || !decoder_.get())
     return;
 
-  refresh_rects_.push_back(
-      SkIRect::MakeWH(static_cast<int>(frame_->width()),
-                      static_cast<int>(frame_->height())));
+  SkIRect frame_rect = SkIRect::MakeWH(frame_->width(), frame_->height());
+  refresh_region_.op(frame_rect, SkRegion::kUnion_Op);
+
   DoRefresh();
 }
 
@@ -200,33 +200,33 @@ void RectangleUpdateDecoder::SubmitToConsumer() {
   if (!frame_)
     return;
 
-  RectVector* dirty_rects = new RectVector();
-  decoder_->GetUpdatedRects(dirty_rects);
+  SkRegion* dirty_region = new SkRegion;
+  decoder_->GetUpdatedRegion(dirty_region);
 
-  consumer_->OnPartialFrameOutput(frame_, dirty_rects, base::Bind(
-      &RectangleUpdateDecoder::OnFrameConsumed, this, dirty_rects));
+  consumer_->OnPartialFrameOutput(frame_, dirty_region, base::Bind(
+      &RectangleUpdateDecoder::OnFrameConsumed, this, dirty_region));
 }
 
 void RectangleUpdateDecoder::DoRefresh() {
   DCHECK(message_loop_->BelongsToCurrentThread());
 
-  if (refresh_rects_.empty())
+  if (refresh_region_.isEmpty())
     return;
 
-  decoder_->RefreshRects(refresh_rects_);
-  refresh_rects_.clear();
+  decoder_->RefreshRegion(refresh_region_);
+  refresh_region_.setEmpty();
   SubmitToConsumer();
 }
 
-void RectangleUpdateDecoder::OnFrameConsumed(RectVector* rects) {
+void RectangleUpdateDecoder::OnFrameConsumed(SkRegion* region) {
   if (!message_loop_->BelongsToCurrentThread()) {
     message_loop_->PostTask(
         FROM_HERE, base::Bind(&RectangleUpdateDecoder::OnFrameConsumed,
-                              this, rects));
+                              this, region));
     return;
   }
 
-  delete rects;
+  delete region;
 
   DoRefresh();
 }