Fix set_area sizes for RequestCopyOfOutput, and related tests.

ui/base/android/window_android.h

 // Copyright 2013 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.
 
 #ifndef UI_BASE_ANDROID_WINDOW_ANDROID_H_
 #define UI_BASE_ANDROID_WINDOW_ANDROID_H_
 
 #include <jni.h>
 #include <vector>
 #include "base/android/jni_weak_ref.h"
@@ skipping 12 matching lines @@
 class UI_BASE_EXPORT WindowAndroid {
  public:
   WindowAndroid(JNIEnv* env, jobject obj, jlong vsync_period);
 
   void Destroy(JNIEnv* env, jobject obj);
 
   base::android::ScopedJavaLocalRef<jobject> GetJavaObject();
 
   static bool RegisterWindowAndroid(JNIEnv* env);
 
-  // The content offset is used to translate snapshots to the correct part of
-  // the window.
+  // The content offset (in DIP space) is used to translate snapshots to the
+  // correct part of the window.
   void set_content_offset(const gfx::Vector2dF& content_offset) {
     content_offset_ = content_offset;
   }
 
   gfx::Vector2dF content_offset() const {
     return content_offset_;
   }
 
   // Compositor callback relay.
   void OnCompositingDidCommit();
@@ skipping 20 matching lines @@
   base::TimeDelta vsync_period_;
 
   ObserverList<WindowAndroidObserver> observer_list_;
 
   DISALLOW_COPY_AND_ASSIGN(WindowAndroid);
 };
 
 }  // namespace ui
 
 #endif  // UI_BASE_ANDROID_WINDOW_ANDROID_H_