<webview>: Move autosize from content to chrome

chrome/browser/guest_view/guest_view_base.h

Index: chrome/browser/guest_view/guest_view_base.h
diff --git a/chrome/browser/guest_view/guest_view_base.h b/chrome/browser/guest_view/guest_view_base.h
index 1ca4dde4d98c3fde10917aca07227872bbc5f5c2..e42b47ce4a5beaa21fb1cf5657ebbbccb4069665 100644
--- a/chrome/browser/guest_view/guest_view_base.h
+++ b/chrome/browser/guest_view/guest_view_base.h
@@ -103,6 +103,26 @@ class GuestViewBase : public content::BrowserPluginGuestDelegate,
   // This gives the derived class an opportunity to perform some cleanup.
   virtual void GuestDestroyed() {}
 
+  // This method is invoked when the guest RenderView is ready, e.g. because we
+  // recreated it after a crash.
+  //
+  // This gives the derived class an opportunity to perform some initialization
+  // work.
+  virtual void GuestReady() {}
+
+  // This method is invoked when the contents auto-resized to give the container
+  // an opportunity to match it if it wishes.
+  //
+  // This gives the derived class an opportunity to inform its container element
+  // or perform other actions.
+  virtual void GuestSizeChangedDueToAutoSize(const gfx::Size& old_size,
+                                             const gfx::Size& new_size) {}
+
+  // This method queries whether autosize is supported for this particular view.
+  // By default, autosize is not supported. Derived classes can override this
+  // behavior to support autosize.
+  virtual bool IsAutoSizeSupported() const;
+
   // This method queries whether drag-and-drop is enabled for this particular
   // view. By default, drag-and-drop is disabled. Derived classes can override
   // this behavior to enable drag-and-drop.
@@ -154,6 +174,11 @@ class GuestViewBase : public content::BrowserPluginGuestDelegate,
     return !strcmp(GetViewType(), view_type);
   }
 
+  // Toggles autosize mode for this GuestView.
+  void SetAutoSize(bool enabled,
+                   const gfx::Size& min_size,
+                   const gfx::Size& max_size);
+
   base::WeakPtr<GuestViewBase> AsWeakPtr();
 
   bool initialized() const { return initialized_; }
@@ -208,7 +233,11 @@ class GuestViewBase : public content::BrowserPluginGuestDelegate,
   // BrowserPluginGuestDelegate implementation.
   virtual void Destroy() OVERRIDE FINAL;
   virtual void DidAttach() OVERRIDE FINAL;
+  virtual void ElementSizeChanged(const gfx::Size& old_size,
+                                  const gfx::Size& new_size) OVERRIDE FINAL;
   virtual int GetGuestInstanceID() const OVERRIDE;
+  virtual void GuestSizeChanged(const gfx::Size& old_size,
+                                const gfx::Size& new_size) OVERRIDE FINAL;
   virtual void RegisterDestructionCallback(
       const DestructionCallback& callback) OVERRIDE FINAL;
   virtual void WillAttach(
@@ -239,6 +268,7 @@ class GuestViewBase : public content::BrowserPluginGuestDelegate,
   // WebContentsObserver implementation.
   virtual void DidStopLoading(
       content::RenderViewHost* render_view_host) OVERRIDE FINAL;
+  virtual void RenderViewReady() OVERRIDE FINAL;
   virtual void WebContentsDestroyed() OVERRIDE FINAL;
 
   // WebContentsDelegate implementation.
@@ -277,6 +307,22 @@ class GuestViewBase : public content::BrowserPluginGuestDelegate,
 
   scoped_ptr<EmbedderWebContentsObserver> embedder_web_contents_observer_;
 
+  // The size of the container element.
+  gfx::Size element_size_;
+
+  // The size of the guest content. Note: In autosize mode, the container
+  // element may not match the size of the guest.
+  gfx::Size guest_size_;
+
+  // Indicates whether autosize mode is enabled or not.
+  bool auto_size_enabled_;
+
+  // The maximum size constraints of the container element in autosize mode.
+  gfx::Size max_auto_size_;
+
+  // The minimum size constraints of the container element in autosize mode.
+  gfx::Size min_auto_size_;
+
   // This is used to ensure pending tasks will not fire after this object is
   // destroyed.
   base::WeakPtrFactory<GuestViewBase> weak_ptr_factory_;