Cleanup of some old TODOs

chrome/browser/android/compositor/tab_content_manager.cc

 // Copyright 2014 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 "chrome/browser/android/compositor/tab_content_manager.h"
 
 #include <android/bitmap.h>
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_string.h"
@@ skipping 76 matching lines @@
     JNIEnv* env = base::android::AttachCurrentThread();
     content::ContentViewCore* view =
         content::ContentViewCore::GetNativeContentViewCore(
             env, j_content_view_core_.obj());
 
     if (view) {
       DCHECK(view->GetWebContents());
       view->GetWebContents()->GetRenderViewHost()->UnlockBackingStore();
     }
 
-    // TODO(jdduke): Tailor response to different failure values appropriately.
     if (response != content::READBACK_SUCCESS || drop_after_readback_) {
       end_callback_.Run(0.f, SkBitmap());
       return;
     }
 
     SkBitmap result_bitmap = bitmap;
     result_bitmap.setImmutable();
     end_callback_.Run(thumbnail_scale_, bitmap);
   }
 
@@ skipping 266 matching lines @@
            jboolean use_approximation_thumbnail) {
   TabContentManager* manager = new TabContentManager(
       env, obj, default_cache_size, approximation_cache_size,
       compression_queue_max_size, write_queue_max_size,
       use_approximation_thumbnail);
   return reinterpret_cast<intptr_t>(manager);
 }
 
 }  // namespace android
 }  // namespace chrome