Fix GrapWindowSnapshot typo

ui/snapshot/snapshot.h

Index: ui/snapshot/snapshot.h
diff --git a/ui/snapshot/snapshot.h b/ui/snapshot/snapshot.h
index 15b3db04f0ce4cca72502985384d414a06345c8f..d6fb6b8b0183326b7b2414e050d1f17bac2dc918 100644
--- a/ui/snapshot/snapshot.h
+++ b/ui/snapshot/snapshot.h
@@ -27,7 +27,7 @@ namespace ui {
 // Grabs a snapshot of the window/view. No security checks are done. This is
 // intended to be used for debugging purposes where no BrowserProcess instance
 // is available (ie. tests). This function is synchronous, so it should NOT be
-// used in a result of user action. Use asynchronous GrapWindowSnapshotAsync()
+// used in a result of user action. Use asynchronous GrabWindowSnapshotAsync()
 // instead.
 SNAPSHOT_EXPORT bool GrabWindowSnapshot(
     gfx::NativeWindow window,
@@ -39,16 +39,16 @@ SNAPSHOT_EXPORT bool GrabViewSnapshot(
     std::vector<unsigned char>* png_representation,
     const gfx::Rect& snapshot_bounds);
 
-// GrapWindowSnapshotAsync() copies snapshot of |source_rect| from window and
+// GrabWindowSnapshotAsync() copies snapshot of |source_rect| from window and
 // scales it to |target_size| asynchronously.
 typedef base::Callback<void(const gfx::Image& snapshot)>
-    GrapWindowSnapshotAsyncCallback;
-SNAPSHOT_EXPORT void GrapWindowSnapshotAsync(
+    GrabWindowSnapshotAsyncCallback;
+SNAPSHOT_EXPORT void GrabWindowSnapshotAsync(
     gfx::NativeWindow window,
     const gfx::Rect& source_rect,
     const gfx::Size& target_size,
     scoped_refptr<base::TaskRunner> background_task_runner,
-    const GrapWindowSnapshotAsyncCallback& callback);
+    const GrabWindowSnapshotAsyncCallback& callback);
 
 }  // namespace ui