[CRD iOS] Viewport fling animation

remoting/client/ios/session/remoting_client.mm

 // Copyright 2017 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.
 
 #if !defined(__has_feature) || !__has_feature(objc_arc)
 #error "This file requires ARC support."
 #endif
 
 #import "remoting/client/ios/session/remoting_client.h"
 
@@ skipping 101 matching lines @@
   // TODO(nicholss): Add audio support to iOS.
   base::WeakPtr<remoting::protocol::AudioStub> audioPlayer = nullptr;
 
   _displayHandler = [[GlDisplayHandler alloc] init];
   _displayHandler.delegate = self;
 
   _session.reset(new remoting::ChromotingSession(
       _sessonDelegate->GetWeakPtr(), [_displayHandler CreateCursorShapeStub],
       [_displayHandler CreateVideoRenderer], audioPlayer, info,
       client_auth_config));
-  _session->Connect();
 
   __weak GlDisplayHandler* weakDisplayHandler = _displayHandler;
   _gestureInterpreter.reset(new remoting::GestureInterpreter(
       base::BindBlockArc(^(const remoting::ViewMatrix& matrix) {
         [weakDisplayHandler onPixelTransformationChanged:matrix];
       }),
       _session.get()));
+
+  _session->Connect();
 }
 
 - (void)disconnectFromHost {
   if (_session) {
     _session->Disconnect();
   }
   // TODO(nicholss): Do we need to cleanup more?
 }
 
 #pragma mark - Eventing
@@ skipping 83 matching lines @@
 
 - (void)surfaceChanged:(const CGRect&)frame {
   [_displayHandler onSurfaceChanged:frame];
   _gestureInterpreter->OnSurfaceSizeChanged(frame.size.width,
                                             frame.size.height);
 }
 
 #pragma mark - GlDisplayHandlerDelegate
 
 - (void)canvasSizeChanged:(CGSize)size {
-  if (_gestureInterpreter) {

[Yuwei, 2017/05/10 06:53:03]

Removed the check since canvasSizeChanged will only be called after
|_gestureInterpreter| is created.

-    _gestureInterpreter->OnDesktopSizeChanged(size.width, size.height);
-  }
+  _gestureInterpreter->OnDesktopSizeChanged(size.width, size.height);
+}
+
+- (void)rendererTicked {
+  _gestureInterpreter->ProcessAnimations();
 }
 
 @end