Implemented GetWindowSnapshot on RenderViewImpl

ui/base/snapshot/snapshot_mac_unittest.mm

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.

[jam, 2012/11/15 01:05:59]

you'll need to move this from chrome's test gypi to the gypi in src/ui

 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "chrome/browser/ui/window_snapshot/window_snapshot.h"
+#include "ui/base/snapshot/snapshot.h"
 
 #import <Cocoa/Cocoa.h>
 
 #include "base/memory/scoped_nsobject.h"
 #include "base/memory/scoped_ptr.h"
 #include "testing/platform_test.h"
 #include "ui/gfx/rect.h"
 
 #if !defined(MAC_OS_X_VERSION_10_7) || \
     MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_7
 
 @interface NSWindow (LionAPI)
 - (CGFloat)backingScaleFactor;
 @end
 
 #endif  // 10.7
 
-namespace chrome {
+namespace ui {
 namespace {
 
 typedef PlatformTest GrabWindowSnapshotTest;
 
 TEST_F(GrabWindowSnapshotTest, TestGrabWindowSnapshot) {
   // Launch a test window so we can take a snapshot.
   NSRect frame = NSMakeRect(0, 0, 400, 400);
   scoped_nsobject<NSWindow> window(
       [[NSWindow alloc] initWithContentRect:frame
                                   styleMask:NSBorderlessWindowMask
@@ skipping 18 matching lines @@
   if ([window respondsToSelector:@selector(backingScaleFactor)])
     scaleFactor = [window backingScaleFactor];
   EXPECT_EQ(400 * scaleFactor, CGImageGetWidth([rep CGImage]));
   NSColor* color = [rep colorAtX:200 * scaleFactor y:200 * scaleFactor];
   CGFloat red = 0, green = 0, blue = 0, alpha = 0;
   [color getRed:&red green:&green blue:&blue alpha:&alpha];
   EXPECT_GE(red + green + blue, 3.0);
 }
 
 }  // namespace
-}  // namespace chrome
+}  // namespace ui