Cross-process frames should be notified of device scale factor changes.

content/browser/web_contents/web_contents_view_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/web_contents/web_contents_view_android.h"
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_string.h"
 #include "base/logging.h"
 #include "content/browser/android/content_view_core_impl.h"
 #include "content/browser/frame_host/interstitial_page_impl.h"
 #include "content/browser/renderer_host/render_widget_host_view_android.h"
 #include "content/browser/renderer_host/render_view_host_factory.h"
 #include "content/browser/renderer_host/render_view_host_impl.h"
 #include "content/browser/web_contents/web_contents_impl.h"
 #include "content/public/browser/render_widget_host.h"
 #include "content/public/browser/web_contents_delegate.h"
 #include "content/public/common/drop_data.h"
+#include "third_party/WebKit/public/platform/WebScreenInfo.h"
+#include "ui/display/screen.h"
+#include "ui/gfx/android/device_display_info.h"
 #include "ui/gfx/android/java_bitmap.h"
 #include "ui/gfx/image/image_skia.h"
 
 using base::android::AttachCurrentThread;
 using base::android::ConvertUTF16ToJavaString;
 using base::android::JavaRef;
 using base::android::ScopedJavaLocalRef;
 
 namespace content {
 
+// static
+void WebContentsView::GetDefaultScreenInfo(
+    blink::WebScreenInfo* results) {
+  const display::Display& display =
+      display::Screen::GetScreen()->GetPrimaryDisplay();
+  results->rect = display.bounds();
+  // TODO(husky): Remove any system controls from availableRect.
+  results->availableRect = display.work_area();
+  results->deviceScaleFactor = display.device_scale_factor();
+  results->orientationAngle = display.RotationAsDegree();
+  results->orientationType =
+      RenderWidgetHostViewBase::GetOrientationTypeForMobile(display);
+  gfx::DeviceDisplayInfo info;
+  results->depth = display.color_depth();
+  results->depthPerComponent = display.depth_per_component();
+  results->isMonochrome = (results->depthPerComponent == 0);
+}
+
 WebContentsView* CreateWebContentsView(
     WebContentsImpl* web_contents,
     WebContentsViewDelegate* delegate,
     RenderViewHostDelegateView** render_view_host_delegate_view) {
   WebContentsViewAndroid* rv = new WebContentsViewAndroid(
       web_contents, delegate);
   *render_view_host_delegate_view = rv;
   return rv;
 }
 
@@ skipping 38 matching lines @@
     return rwhv->GetNativeView();
 
   // TODO(sievers): This should return null.
   return GetNativeView();
 }
 
 gfx::NativeWindow WebContentsViewAndroid::GetTopLevelNativeWindow() const {
   return content_view_core_ ? content_view_core_->GetWindowAndroid() : nullptr;
 }
 
+void WebContentsViewAndroid::GetScreenInfo(blink::WebScreenInfo* result) const {
+  // ScreenInfo isn't tied to the widget on Android. Always return the default.
+  WebContentsView::GetDefaultScreenInfo(result);
+}
+
 void WebContentsViewAndroid::GetContainerBounds(gfx::Rect* out) const {
   *out = content_view_core_ ? gfx::Rect(content_view_core_->GetViewSize())
                             : gfx::Rect();
 }
 
 void WebContentsViewAndroid::SetPageTitle(const base::string16& title) {
   if (content_view_core_)
     content_view_core_->SetTitle(title);
 }
 
@@ skipping 177 matching lines @@
 // This is called when we the renderer asks us to take focus back (i.e., it has
 // iterated past the last focusable element on the page).
 void WebContentsViewAndroid::TakeFocus(bool reverse) {
   if (web_contents_->GetDelegate() &&
       web_contents_->GetDelegate()->TakeFocus(web_contents_, reverse))
     return;
   web_contents_->GetRenderWidgetHostView()->Focus();
 }
 
 } // namespace content