Fix page zoom to be frame-centric for out-of-process frames.

content/browser/web_contents/web_contents_impl.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_impl.h"
 
 #include <stddef.h>
 
 #include <cmath>
 #include <utility>
@@ skipping 94 matching lines @@
 #include "content/public/common/content_constants.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/common/page_zoom.h"
 #include "content/public/common/result_codes.h"
 #include "content/public/common/security_style.h"
 #include "content/public/common/url_constants.h"
 #include "content/public/common/url_utils.h"
 #include "content/public/common/web_preferences.h"
 #include "mojo/common/url_type_converters.h"
 #include "mojo/converters/geometry/geometry_type_converters.h"
+#include "net/base/url_util.h"
 #include "net/http/http_cache.h"
 #include "net/http/http_transaction_factory.h"
 #include "net/url_request/url_request_context.h"
 #include "net/url_request/url_request_context_getter.h"
 #include "skia/public/type_converters.h"
 #include "third_party/WebKit/public/web/WebSandboxFlags.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "ui/base/layout.h"
 #include "ui/gfx/display.h"
 #include "ui/gfx/screen.h"
@@ skipping 726 matching lines @@
   SetAccessibilityMode(RemoveAccessibilityModeFrom(accessibility_mode_, mode));
 }
 
 void WebContentsImpl::RequestAXTreeSnapshot(AXTreeSnapshotCallback callback) {
   // TODO(dmazzoni): http://crbug.com/475608 This only returns the
   // accessibility tree from the main frame and everything in the
   // same site instance.
   GetMainFrame()->RequestAXTreeSnapshot(callback);
 }
 
+void WebContentsImpl::SetTemporaryZoomLevel(double level, bool is_temporary) {
+  SendToAllFrames(new FrameMsg_SetTemporaryZoomLevel(MSG_ROUTING_NONE, level,
+                                                     is_temporary));
+}
+
+void WebContentsImpl::UpdateZoom(double level) {
+  // Individual frames may still ignore the new zoom level if their RenderView
+  // contains a plugin document or if it uses a temporary zoom level.
+  SendToAllFrames(
+      new FrameMsg_SetZoomLevelFromWebContents(MSG_ROUTING_NONE, level));
+}
+
+void WebContentsImpl::UpdateZoomIfNecessary(const std::string& scheme,
+                                            const std::string& host,
+                                            double level) {
+  NavigationEntry* entry = GetController().GetLastCommittedEntry();
+  if (!entry)

[alexmos, 2016/04/05 18:00:53]

So this means that we ignore zoom changes when there's no committed entry?

+    return;
+
+  GURL url = HostZoomMap::GetURLFromEntry(entry);
+  if (host != net::GetHostOrSpecFromURL(url) ||
+      (!scheme.empty() && scheme != url.scheme())) {
+    // TODO(wjmaclean): verify the logic here is solid.
+    return;
+  }
+
+  UpdateZoom(level);
+}
+
 WebUI* WebContentsImpl::CreateSubframeWebUI(const GURL& url,
                                             const std::string& frame_name) {
   DCHECK(!frame_name.empty());
   return CreateWebUI(url, frame_name);
 }
 
 WebUI* WebContentsImpl::GetWebUI() const {
   WebUI* commited_web_ui = GetCommittedWebUI();
   return commited_web_ui ? commited_web_ui
                          : GetRenderManager()->GetNavigatingWebUI();
@@ skipping 3954 matching lines @@
   else
     WasHidden();
 }
 
 void WebContentsImpl::SetJavaScriptDialogManagerForTesting(
     JavaScriptDialogManager* dialog_manager) {
   dialog_manager_ = dialog_manager;
 }
 
 }  // namespace content