Make <webview> use out-of-process iframe architecture.

content/browser/frame_host/render_frame_host_manager.h

 // Copyright 2013 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.
 
 #ifndef CONTENT_BROWSER_FRAME_HOST_RENDER_FRAME_HOST_MANAGER_H_
 #define CONTENT_BROWSER_FRAME_HOST_RENDER_FRAME_HOST_MANAGER_H_
 
 #include <list>
 
 #include "base/basictypes.h"
@@ skipping 159 matching lines @@
     // to see what it should do.
     virtual bool FocusLocationBarByDefault() = 0;
 
     // Focuses the location bar.
     virtual void SetFocusToLocationBar(bool select_all) = 0;
 
     // Returns true if views created for this delegate should be created in a
     // hidden state.
     virtual bool IsHidden() = 0;
 
+    // Returns the FrameTreeNode id of the outer WebContents that is hosting
+    // this (inner) WebContents.

[nasko, 2015/06/15 23:00:13]

nit: Lots of empty whitespace at end of this line. Start the next line of
comment at the end of this sentence.

[lazyboy, 2015/06/16 17:59:51]

Done.

+    // This FrameTreeNode is the frame that represents this inner WebContents
+    // within the outer WebContents.

[nasko, 2015/06/15 23:00:13]

nit: s/within/within the FrameTree of/

[lazyboy, 2015/06/16 17:59:51]

Done.

+    // Returns FrameTreeNode::FRAME_TREE_NODE_ID_NONE if this WebContents does
+    // not have an outer WebContents.
+    virtual int GetOuterDelegateFrameTreeNodeID() = 0;
+
    protected:
     virtual ~Delegate() {}
   };
 
   // Used with FrameTree::ForEach to delete RenderFrameHosts pending shutdown
   // from a FrameTreeNode's RenderFrameHostManager. Used during destruction of
   // WebContentsImpl.
   static bool ClearRFHsPendingShutdown(FrameTreeNode* node);
 
   // All three delegate pointers must be non-NULL and are not owned by this
@@ skipping 25 matching lines @@
     return render_frame_host_.get();
   }
 
   // TODO(creis): Remove this when we no longer use RVH for navigation.
   RenderViewHostImpl* current_host() const;
 
   // Returns the view associated with the current RenderViewHost, or NULL if
   // there is no current one.
   RenderWidgetHostView* GetRenderWidgetHostView() const;
 
+  // Returns the RenderWidgetHost of outer WebContents that can be used to fetch
+  // the last keyboard event.
+  // TODO(lazyboy): This can be removed once input events are sent directly to
+  // remote frames.
+  RenderWidgetHostImpl* GetOuterRenderWidgetHostForKeyboardInput();
+
   RenderFrameProxyHost* GetProxyToParent();
+  RenderFrameProxyHost* GetProxyToOuterDelegate();

[nasko, 2015/06/15 23:00:13]

nit: Add a small comment to describe what this method does. It should address
the fact that it can return nullptr if there is no inner/outer relationship.

[lazyboy, 2015/06/16 17:59:51]

Done.

+
+  // Returns whether this manager belongs to a FrameTreeNode that is a main
+  // frame in an inner WebContents.
+  //

[nasko, 2015/06/15 23:00:13]

nit: no need for empty line.

[lazyboy, 2015/06/16 17:59:51]

Done.

+  // TODO(lazyboy): Make this work correctly for subframes inside inner
+  // WebContents too.
+  bool ForInnerDelegate();
+
+  // Removes the FrameTreeNode in the outer WebContents that represents this
+  // FrameTreeNode.
+  void RemoveOuterDelegateFrame();
 
   // Returns the pending RenderFrameHost, or NULL if there is no pending one.
   RenderFrameHostImpl* pending_frame_host() const {
     return pending_render_frame_host_.get();
   }
 
   // Returns the speculative RenderFrameHost, or null if there is no speculative
   // one.
   RenderFrameHostImpl* speculative_frame_host_for_testing() const {
     return speculative_render_frame_host_.get();
@@ skipping 179 matching lines @@
   void OnDidUpdateName(const std::string& name);
 
   // Send updated origin to all frame proxies when the frame navigates to a new
   // origin.
   void OnDidUpdateOrigin(const url::Origin& origin);
 
   void EnsureRenderViewInitialized(FrameTreeNode* source,
                                    RenderViewHostImpl* render_view_host,
                                    SiteInstance* instance);
 
+  // Called on the RFHM of the inner WebContents to create a proxy for this

[nasko, 2015/06/15 23:00:13]

nit: s/proxy/RenderFrameProxyHost/

[lazyboy, 2015/06/16 17:59:51]

Done.

+  // inner WebContents's frame in its outer WebContents's process.

[nasko, 2015/06/15 23:00:13]

nit: s/process/SiteInstance/. Also, the SiteInstance for the parent frame, not
just any frame in the outer WebContents.

[lazyboy, 2015/06/16 17:59:51]

Done.

+  void CreateOuterDelegateProxy(SiteInstance* outer_contents_site_instance,
+                                RenderFrameHostImpl* render_frame_host);
+
+  // Sets the child RWHV for this frame, which much be part of an inner

[nasko, 2015/06/15 23:00:13]

nit: s/RWHV/RenderWidgetHostView/

[lazyboy, 2015/06/16 17:59:51]

Done.

+  // WebContents.
+  void SetRWHViewForInnerContents(RenderWidgetHostView* child_rwhv);
+
  private:
   friend class FrameTreeVisualizer;
   friend class NavigatorTestWithBrowserSideNavigation;
   friend class RenderFrameHostManagerTest;
   friend class TestWebContents;
 
   // Stores information regarding a SiteInstance targeted at a specific URL to
   // allow for comparisons without having to actually create new instances. It
   // can point to an existing one or store the details needed to create a new
   // one.
@@ skipping 299 matching lines @@
   bool should_reuse_web_ui_;
 
   base::WeakPtrFactory<RenderFrameHostManager> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderFrameHostManager);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_FRAME_HOST_RENDER_FRAME_HOST_MANAGER_H_