[Chromecast] Handle device scale factor correctly

chromecast/renderer/cast_content_renderer_client.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 "chromecast/renderer/cast_content_renderer_client.h"
 
 #include <stdint.h>
 
 #include "base/command_line.h"
 #include "base/macros.h"
@@ skipping 69 matching lines @@
   blink::WebView* webview = render_view->GetWebView();
   if (webview) {
     blink::WebFrameWidget* web_frame_widget = render_view->GetWebFrameWidget();
     web_frame_widget->setBaseBackgroundColor(kColorBlack);
 
     // The following settings express consistent behaviors across Cast
     // embedders, though Android has enabled by default for mobile browsers.
     webview->settings()->setShrinksViewportContentToFit(false);
     webview->settings()->setMediaControlsOverlayPlayButtonEnabled(false);
 
-    // Scale 1 ensures window.innerHeight/Width match application resolution.
-    // PageScaleOverride is the 'user agent' value which overrides page
-    // settings (from meta viewport tag) - thus preventing inconsistency
-    // between Android and non-Android cast_shell.
-    webview->setDefaultPageScaleLimits(1.f, 1.f);
-    webview->setInitialPageScaleOverride(1.f);
-
     // Disable application cache as Chromecast doesn't support off-line
     // application running.
     webview->settings()->setOfflineWebApplicationCacheEnabled(false);
   }
 }
 
 void CastContentRendererClient::AddSupportedKeySystems(
     std::vector<std::unique_ptr<::media::KeySystemProperties>>*
         key_systems_properties) {
   AddChromecastKeySystems(key_systems_properties);
@@ skipping 28 matching lines @@
     closure.Run();
     return;
   }
 
   // Lifetime is tied to |render_frame| via content::RenderFrameObserver.
   new CastMediaLoadDeferrer(render_frame, closure);
 }
 
 }  // namespace shell
 }  // namespace chromecast