Fix crashers and issues when rendering blimp in tabs

blimp/client/core/contents/tab_control_feature.cc

 // Copyright 2015 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 "blimp/client/core/contents/tab_control_feature.h"
 
 #include "blimp/common/create_blimp_message.h"
 #include "blimp/common/proto/blimp_message.pb.h"
 #include "blimp/common/proto/tab_control.pb.h"
 #include "blimp/net/blimp_message_processor.h"
 #include "net/base/net_errors.h"
 
 namespace blimp {
 namespace client {
 
 TabControlFeature::TabControlFeature() {}
 
 TabControlFeature::~TabControlFeature() {}
 
 void TabControlFeature::set_outgoing_message_processor(
     std::unique_ptr<BlimpMessageProcessor> processor) {
   outgoing_message_processor_ = std::move(processor);
 }
 
 void TabControlFeature::SetSizeAndScale(const gfx::Size& size,
                                         float device_pixel_ratio) {
-  if (last_size_ == size && last_device_pixel_ratio_ == device_pixel_ratio) {
-    return;
-  }
-
   last_size_ = size;
   last_device_pixel_ratio_ = device_pixel_ratio;
 
   SizeMessage* size_details;
   std::unique_ptr<BlimpMessage> message = CreateBlimpMessage(&size_details);
   size_details->set_width(size.width());
   size_details->set_height(size.height());
   size_details->set_device_pixel_ratio(device_pixel_ratio);
 
   // TODO(dtrainor): Don't keep sending size events to the server.  Wait for a
@@ skipping 22 matching lines @@
     std::unique_ptr<BlimpMessage> message,
     const net::CompletionCallback& callback) {
   DCHECK(!callback.is_null());
   callback.Run(net::OK);
 
   NOTIMPLEMENTED();
 }
 
 }  // namespace client
 }  // namespace blimp