Backed out changeset 53bb2bc2b676 (bug 1397426)

--HG--
extra : rebase_source : 7ef95ce8467ed642077b6c141e440428f71fa3f6

browser/base/content/tabbrowser.xml

@@ -4448,9 +4448,7 @@
               }
               for (let ppBrowser of this.tabbrowser._printPreviewBrowsers) {
                 let ppTab = this.tabbrowser.getTabForBrowser(ppBrowser);
-                let state = ppBrowser.hasLayers ? this.STATE_LOADED
-                                                : this.STATE_LOADING;
-                this.setTabState(ppTab, state);
+                this.setTabState(ppTab, this.STATE_LOADING);
               }
             },
 

dom/interfaces/base/nsITabParent.idl

@@ -32,12 +32,6 @@ interface nsITabParent : nsISupports
    */
   void renderLayers(in bool aEnabled);
 
-  /**
-   * True if layers are being rendered and the compositor has reported
-   * receiving them.
-   */
-  readonly attribute boolean hasLayers;
-
   /**
    * Whether this tabParent is in prerender mode.
    */

dom/ipc/TabParent.cpp

@@ -2995,13 +2995,6 @@ TabParent::RenderLayers(bool aEnabled)
   return NS_OK;
 }
 
-NS_IMETHODIMP
-TabParent::GetHasLayers(bool* aResult)
-{
-  *aResult = mHasLayers;
-  return NS_OK;
-}
-
 NS_IMETHODIMP
 TabParent::PreserveLayers(bool aPreserveLayers)
 {

toolkit/content/widgets/browser.xml

@@ -304,14 +304,6 @@
         </body>
       </method>
 
-      <property name="hasLayers" readonly="true">
-        <getter>
-          <![CDATA[
-            return this.docShellIsActive;
-          ]]>
-        </getter>
-      </property>
-
       <property name="imageDocument"
                 readonly="true">
         <getter>

toolkit/content/widgets/remote-browser.xml

@@ -258,16 +258,6 @@
         ]]></body>
       </method>
 
-      <property name="hasLayers" readonly="true">
-        <getter><![CDATA[
-          let {frameLoader} = this;
-          if (frameLoader.tabParent) {
-            return frameLoader.tabParent.hasLayers;
-          }
-          return false;
-        ]]></getter>
-      </property>
-
       <field name="_manifestURI"/>
       <property name="manifestURI"
                 onget="return this._manifestURI"