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

content/browser/web_contents/web_contents_view_mac.mm

 // 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.
 
 #import <Carbon/Carbon.h>
 
 #import "content/browser/web_contents/web_contents_view_mac.h"
 
 #include <string>
 
@@ skipping 12 matching lines @@
 #import "content/browser/web_contents/web_drag_source_mac.h"
 #include "content/common/view_messages.h"
 #include "content/public/browser/web_contents_delegate.h"
 #include "content/public/browser/web_contents_view_delegate.h"
 #include "content/public/common/content_switches.h"
 #include "skia/ext/skia_utils_mac.h"
 #import "third_party/mozilla/NSPasteboard+Utils.h"
 #include "ui/base/clipboard/custom_data_helper.h"
 #import "ui/base/cocoa/focus_tracker.h"
 #include "ui/base/dragdrop/cocoa_dnd_util.h"
+#include "ui/display/screen.h"
 #include "ui/gfx/image/image_skia_util_mac.h"
 
 using blink::WebDragOperation;
 using blink::WebDragOperationsMask;
 using content::DropData;
 using content::PopupMenuHelper;
 using content::RenderViewHostFactory;
 using content::RenderWidgetHostView;
 using content::RenderWidgetHostViewMac;
 using content::WebContents;
@@ skipping 24 matching lines @@
                         image:(NSImage*)image
                        offset:(NSPoint)offset;
 - (void)cancelDeferredClose;
 - (void)clearWebContentsView;
 - (void)closeTabAfterEvent;
 - (void)updateWebContentsVisibility;
 - (void)viewDidBecomeFirstResponder:(NSNotification*)notification;
 - (content::WebContentsImpl*)webContents;
 @end
 
+namespace {
+
+blink::WebScreenInfo GetWebScreenInfo(NSView* view) {
+  display::Display display =
+      display::Screen::GetScreen()->GetDisplayNearestWindow(view);
+
+  NSScreen* screen = [NSScreen deepestScreen];
+
+  blink::WebScreenInfo results;
+
+  results.deviceScaleFactor = static_cast<int>(display.device_scale_factor());
+  results.depth = NSBitsPerPixelFromDepth([screen depth]);
+  results.depthPerComponent = NSBitsPerSampleFromDepth([screen depth]);
+  results.isMonochrome =
+      [[screen colorSpace] colorSpaceModel] == NSGrayColorSpaceModel;
+  results.rect = display.bounds();
+  results.availableRect = display.work_area();
+  results.orientationAngle = display.RotationAsDegree();
+  results.orientationType =
+      content::RenderWidgetHostViewBase::GetOrientationTypeForDesktop(display);
+
+  return results;
+}
+
+}  // namespace
+
 namespace content {
 
+// static
+void WebContentsView::GetDefaultScreenInfo(
+    blink::WebScreenInfo* results) {
+  *results = GetWebScreenInfo(NULL);
+}
+
 WebContentsView* CreateWebContentsView(
     WebContentsImpl* web_contents,
     WebContentsViewDelegate* delegate,
     RenderViewHostDelegateView** render_view_host_delegate_view) {
   WebContentsViewMac* rv = new WebContentsViewMac(web_contents, delegate);
   *render_view_host_delegate_view = rv;
   return rv;
 }
 
 WebContentsViewMac::WebContentsViewMac(WebContentsImpl* web_contents,
@@ skipping 21 matching lines @@
   if (!rwhv)
     return NULL;
   return rwhv->GetNativeView();
 }
 
 gfx::NativeWindow WebContentsViewMac::GetTopLevelNativeWindow() const {
   NSWindow* window = [cocoa_view_.get() window];
   return window ? window : delegate_->GetNativeWindow();
 }
 
+void WebContentsViewMac::GetScreenInfo(blink::WebScreenInfo* results) const {
+  *results = GetWebScreenInfo(GetNativeView());
+}
+
 void WebContentsViewMac::GetContainerBounds(gfx::Rect* out) const {
   NSWindow* window = [cocoa_view_.get() window];
   NSRect bounds = [cocoa_view_.get() bounds];
   if (window)  {
     // Convert bounds to window coordinate space.
     bounds = [cocoa_view_.get() convertRect:bounds toView:nil];
 
     // Convert bounds to screen coordinate space.
     bounds = [window convertRectToScreen:bounds];
   }
@@ skipping 547 matching lines @@
 
 - (void)viewDidHide {
   [self updateWebContentsVisibility];
 }
 
 - (void)viewDidUnhide {
   [self updateWebContentsVisibility];
 }
 
 @end