chrome: Put window_snapshot into chrome namespace.

chrome/browser/ui/window_snapshot/window_snapshot_mac.mm

Index: chrome/browser/ui/window_snapshot/window_snapshot_mac.mm
diff --git a/chrome/browser/ui/window_snapshot/window_snapshot_mac.mm b/chrome/browser/ui/window_snapshot/window_snapshot_mac.mm
index b31baa051fb65f8fbc63f6664f6950b5abe5f1fd..71d965a22692a23a29685deb2985c9676e5c4a04 100644
--- a/chrome/browser/ui/window_snapshot/window_snapshot_mac.mm
+++ b/chrome/browser/ui/window_snapshot/window_snapshot_mac.mm
@@ -11,11 +11,11 @@
 #include "base/memory/scoped_nsobject.h"
 #include "ui/gfx/rect.h"
 
-namespace browser {
+namespace chrome {
 
 bool GrabWindowSnapshot(gfx::NativeWindow window,
-    std::vector<unsigned char>* png_representation,
-    const gfx::Rect& snapshot_bounds) {
+                        std::vector<unsigned char>* png_representation,
+                        const gfx::Rect& snapshot_bounds) {
   NSScreen* screen = [[NSScreen screens] objectAtIndex:0];
   gfx::Rect screen_bounds = gfx::Rect(NSRectToCGRect([screen frame]));
   gfx::Rect window_bounds = gfx::Rect(NSRectToCGRect([window frame]));
@@ -58,4 +58,4 @@ bool GrabWindowSnapshot(gfx::NativeWindow window,
   return true;
 }
 
-}  // namespace browser
+}  // namespace chrome