Change the scale factor of texture_size from the layer's one to an estimation.

content/browser/renderer_host/render_widget_host_view_aura.cc

 // Copyright (c) 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.
 
 #include "content/browser/renderer_host/render_widget_host_view_aura.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
@@ skipping 205 matching lines @@
     : host_(RenderWidgetHostImpl::From(host)),
       ALLOW_THIS_IN_INITIALIZER_LIST(window_(new aura::Window(this))),
       in_shutdown_(false),
       is_fullscreen_(false),
       popup_parent_host_view_(NULL),
       popup_child_host_view_(NULL),
       is_loading_(false),
       text_input_type_(ui::TEXT_INPUT_TYPE_NONE),
       can_compose_inline_(true),
       has_composition_text_(false),
+      device_scale_factor_(1.0f),
       current_surface_(0),
       current_surface_is_protected_(true),
       current_surface_in_use_by_compositor_(true),
       protection_state_id_(0),
       surface_route_id_(0),
       paint_canvas_(NULL),
       synthetic_move_sent_(false),
       accelerated_compositing_state_changed_(false) {
   host_->SetView(this);
   window_observer_.reset(new WindowObserver(this));
@@ skipping 620 matching lines @@
 }
 
 // TODO(backer): Drop the |shm_handle| once I remove some unused service side
 // code.
 void RenderWidgetHostViewAura::AcceleratedSurfaceNew(
       int32 width_in_pixel,
       int32 height_in_pixel,
       uint64 surface_handle) {
   ImageTransportFactory* factory = ImageTransportFactory::GetInstance();
   scoped_refptr<ui::Texture> surface(factory->CreateTransportClient(
-      gfx::Size(width_in_pixel, height_in_pixel), surface_handle));
+      gfx::Size(width_in_pixel, height_in_pixel), device_scale_factor_,
+      surface_handle));
   if (!surface) {
     LOG(ERROR) << "Failed to create ImageTransport texture";
     return;
   }
 
   image_transport_clients_[surface_handle] = surface;
 }
 
 void RenderWidgetHostViewAura::AcceleratedSurfaceRelease(
     uint64 surface_handle) {
@@ skipping 402 matching lines @@
   } else if (aura::Env::GetInstance()->render_white_bg()) {
     canvas->DrawColor(SK_ColorWHITE);
   }
 }
 
 void RenderWidgetHostViewAura::OnDeviceScaleFactorChanged(
     float device_scale_factor) {
   if (!host_)
     return;
 
+  device_scale_factor_ = device_scale_factor;
   BackingStoreAura* backing_store = static_cast<BackingStoreAura*>(
       host_->GetBackingStore(false));
   if (backing_store)  // NULL in hardware path.
     backing_store->ScaleFactorChanged(device_scale_factor);
 
   host_->SetDeviceScaleFactor(device_scale_factor);
   current_cursor_.SetScaleFactor(device_scale_factor);
 }
 
 void RenderWidgetHostViewAura::OnWindowDestroying() {
@@ skipping 35 matching lines @@
     return scoped_refptr<ui::Texture>();
 
   ui::Texture* container = it->second;
   DCHECK(container);
   WebKit::WebGLId texture_id =
       gl_helper->CopyTexture(container->texture_id(), container->size());
   if (!texture_id)
     return scoped_refptr<ui::Texture>();
 
   return scoped_refptr<ui::Texture>(
-      factory->CreateOwnedTexture(container->size(), texture_id));
+      factory->CreateOwnedTexture(
+          container->size(), device_scale_factor_, texture_id));
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // RenderWidgetHostViewAura, ui::EventHandler implementation:
 
 ui::EventResult RenderWidgetHostViewAura::OnKeyEvent(ui::KeyEvent* event) {
   TRACE_EVENT0("browser", "RenderWidgetHostViewAura::OnKeyEvent");
   if (popup_child_host_view_ && popup_child_host_view_->NeedsInputGrab() &&
       popup_child_host_view_->OnKeyEvent(event))
     return ui::ER_HANDLED;
@@ skipping 436 matching lines @@
     RenderWidgetHost* widget) {
   return new RenderWidgetHostViewAura(widget);
 }
 
 // static
 void RenderWidgetHostViewPort::GetDefaultScreenInfo(WebScreenInfo* results) {
   GetScreenInfoForWindow(results, NULL);
 }
 
 }  // namespace content