Add a header for OverView.cpp as well.

This fixes another FIXMEs.

Signed-off-by: Thiago Farina <tfarina@chromium.org>

Review URL: https://codereview.appspot.com/6492125

git-svn-id: http://skia.googlecode.com/svn/trunk@5576 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/samplecode/SampleApp.cpp b/samplecode/SampleApp.cpp
index cfdd4ae..a98f2fc 100644
--- a/samplecode/SampleApp.cpp
+++ b/samplecode/SampleApp.cpp
@@ -37,6 +37,7 @@
 
 #include "SkGPipe.h"
 #include "SamplePipeControllers.h"
+#include "OverView.h"
 #include "TransitionView.h"
 
 SK_DEFINE_INST_COUNT(SampleWindow::DeviceManager)
@@ -79,11 +80,6 @@
 //#define DEFAULT_TO_GPU 1
 #endif
 
-extern SkView* create_overview(int, const SkViewFactory*[]);
-extern bool is_overview(SkView* view);
-extern bool is_transition(SkView* view);
-
-
 #define ANIMATING_EVENTTYPE "nextSample"
 #define ANIMATING_DELAY     750