Set the device scale factor from the compositor interface

content/browser/renderer_host/compositor_impl_android.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/compositor_impl_android.h"
 
 #include <android/bitmap.h>
 #include <android/native_window_jni.h>
 
 #include "base/bind.h"
@@ skipping 178 matching lines @@
     host_ = cc::LayerTreeHost::create(this, settings, impl_thread.Pass());
     host_->setRootLayer(root_layer_);
 
     host_->setVisible(true);
     host_->setSurfaceReady();
     host_->setViewportSize(size_, size_);
     host_->setHasTransparentBackground(has_transparent_background_);
   }
 }
 
+void CompositorImpl::setDeviceScaleFactor(float factor) {
+  host_->setDeviceScaleFactor(factor);
+}
+
 void CompositorImpl::SetWindowBounds(const gfx::Size& size) {
   if (size_ == size)
     return;
 
   size_ = size;
   if (host_)
     host_->setViewportSize(size, size);
   root_layer_->setBounds(size);
 }
 
@@ skipping 215 matching lines @@
     case ANDROID_BITMAP_FORMAT_RGBA_8888:
       return GL_UNSIGNED_BYTE;
       break;
     case ANDROID_BITMAP_FORMAT_RGB_565:
     default:
       return GL_UNSIGNED_SHORT_5_6_5;
   }
 }
 
 } // namespace content