Implemented GetWindowSnapshot on RenderViewImpl

ui/snapshot/snapshot_mac_unittest.mm

 // Copyright (c) 2012 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/ui/window_snapshot/window_snapshot.h"
+#include "ui/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
                                     backing:NSBackingStoreBuffered
                                       defer:NO]);
   [window setBackgroundColor:[NSColor whiteColor]];
   [window makeKeyAndOrderFront:NSApp];
 
   scoped_ptr<std::vector<unsigned char> > png_representation(
       new std::vector<unsigned char>);
   gfx::Rect bounds = gfx::Rect(0, 0, frame.size.width, frame.size.height);
-  EXPECT_TRUE(internal::GrabWindowSnapshot(window, png_representation.get(),
+  EXPECT_TRUE(ui::GrabWindowSnapshot(window, png_representation.get(),
                                            bounds));
 
   // Copy png back into NSData object so we can make sure we grabbed a png.
   scoped_nsobject<NSData> image_data(
       [[NSData alloc] initWithBytes:&(*png_representation)[0]
                              length:png_representation->size()]);
   NSBitmapImageRep* rep = [NSBitmapImageRep imageRepWithData:image_data.get()];
   EXPECT_TRUE([rep isKindOfClass:[NSBitmapImageRep class]]);
   CGFloat scaleFactor = 1.0f;
   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