[Chromoting] Unit Tests for GlRenderer

remoting/client/gl_cursor_feedback_texture.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/client/gl_cursor_feedback_texture.h"
 
 #include "remoting/client/gl_render_layer.h"
 
 namespace remoting {
 
@@ skipping 16 matching lines @@
 
 uint32_t GetColorByRadius(float radius) {
   int ring_index = kColorRingsCount - 1;
   // Find first radius stop that is not smaller than current radius.
   while (radius < kFeedbackRadiusStops[ring_index] && ring_index >= 0) {
     ring_index--;
   }
 
   if (ring_index < 0) {
     NOTREACHED();
-    return -1;
+    return 0;
   }
 
   if (ring_index == kColorRingsCount - 1) {
     // Area outside the circle. Just use the outermost color.
     return *reinterpret_cast<const uint32_t*>(kFeedbackRingColors[ring_index]);
   }
 
   const uint8_t* first_color = kFeedbackRingColors[ring_index];
   const uint8_t* second_color = kFeedbackRingColors[ring_index + 1];
   float first_radius = kFeedbackRadiusStops[ring_index];
@@ skipping 50 matching lines @@
 
 GlCursorFeedbackTexture::GlCursorFeedbackTexture() {
   texture_.resize(kTextureWidth * kTextureWidth *
                   GlRenderLayer::kBytesPerPixel);
   FillFeedbackTexture(reinterpret_cast<uint32_t*>(texture_.data()));
 }
 
 GlCursorFeedbackTexture::~GlCursorFeedbackTexture() {}
 
 }  // namespace remoting