base: Remove the string logging from CHECK().

remoting/test/cyclic_frame_generator.cc

 // Copyright 2016 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 "remoting/test/cyclic_frame_generator.h"
 
 #include "base/time/default_tick_clock.h"
 #include "remoting/test/frame_generator_util.h"
 #include "third_party/webrtc/modules/desktop_capture/desktop_frame.h"
 #include "third_party/webrtc/modules/desktop_capture/desktop_geometry.h"
@@ skipping 15 matching lines @@
 }
 
 CyclicFrameGenerator::CyclicFrameGenerator(
     std::vector<std::unique_ptr<webrtc::DesktopFrame>> reference_frames)
     : reference_frames_(std::move(reference_frames)),
       clock_(&default_tick_clock_),
       started_time_(clock_->NowTicks()) {
   CHECK(!reference_frames_.empty());
   screen_size_ = reference_frames_[0]->size();
   for (const auto& frame : reference_frames_) {
-    CHECK(screen_size_.equals(frame->size()))
-        << "All reference frames should have the same size.";
+    // All reference frames should have the same size.
+    CHECK(screen_size_.equals(frame->size()));
   }
 }
 
 CyclicFrameGenerator::~CyclicFrameGenerator() {}
 
 void CyclicFrameGenerator::SetTickClock(base::TickClock* tick_clock) {
   clock_ = tick_clock;
   started_time_ = clock_->NowTicks();
 }
 
@@ skipping 58 matching lines @@
   return result;
 }
 
 protocol::InputEventTimestamps CyclicFrameGenerator::TakeLastEventTimestamps() {
   base::TimeTicks now = clock_->NowTicks();
   return protocol::InputEventTimestamps{now, now};
 }
 
 }  // namespace test
 }  // namespace remoting