Rename WindowTreeHost G|SetBounds to indicate they are in pixels.

blimp/engine/session/blimp_engine_session.cc

Index: blimp/engine/session/blimp_engine_session.cc
diff --git a/blimp/engine/session/blimp_engine_session.cc b/blimp/engine/session/blimp_engine_session.cc
index f71ae27f15c1570a9c0dce82f533d7f202203d95..57a3ec2f7b86e60c8babc740cec73376590aa31e 100644
--- a/blimp/engine/session/blimp_engine_session.cc
+++ b/blimp/engine/session/blimp_engine_session.cc
@@ -305,7 +305,8 @@ void BlimpEngineSession::Initialize() {
 
   window_tree_host_->GetInputMethod()->AddObserver(this);
 
-  window_tree_host_->SetBounds(gfx::Rect(screen_->GetPrimaryDisplay().size()));
+  window_tree_host_->SetBoundsInPixels(
+      gfx::Rect(screen_->GetPrimaryDisplay().size()));
 
   RegisterFeatures();
 
@@ -393,7 +394,7 @@ void BlimpEngineSession::HandleResize(float device_pixel_ratio,
                                       const gfx::Size& size) {
   DVLOG(1) << "Resize to " << size.ToString() << ", " << device_pixel_ratio;
   screen_->UpdateDisplayScaleAndSize(device_pixel_ratio, size);
-  window_tree_host_->SetBounds(gfx::Rect(size));
+  window_tree_host_->SetBoundsInPixels(gfx::Rect(size));
   if (tab_) {
     tab_->Resize(device_pixel_ratio,
                  screen_->GetPrimaryDisplay().bounds().size());