Cleaning includes in SkImage-related files

BUG=skia:2948
R=junov@chromium.org, tfarina@chromium.org, reed@google.com

Author: piotaixr@chromium.org

Review URL: https://codereview.chromium.org/586853003
diff --git a/src/image/SkImagePriv.h b/src/image/SkImagePriv.h
index 031832bd..8990076 100644
--- a/src/image/SkImagePriv.h
+++ b/src/image/SkImagePriv.h
@@ -8,7 +8,6 @@
 #ifndef SkImagePriv_DEFINED
 #define SkImagePriv_DEFINED
 
-#include "SkBitmap.h"
 #include "SkImage.h"
 
 // Call this if you explicitly want to use/share this pixelRef in the image
diff --git a/src/image/SkImage_Gpu.cpp b/src/image/SkImage_Gpu.cpp
index 5733a89..cf1b493 100644
--- a/src/image/SkImage_Gpu.cpp
+++ b/src/image/SkImage_Gpu.cpp
@@ -11,7 +11,6 @@
 #include "SkCanvas.h"
 #include "GrContext.h"
 #include "GrTexture.h"
-#include "SkGrPixelRef.h"
 
 class SkImage_Gpu : public SkImage_Base {
 public:
diff --git a/src/image/SkImage_Raster.cpp b/src/image/SkImage_Raster.cpp
index f1d1fcd..181f194 100644
--- a/src/image/SkImage_Raster.cpp
+++ b/src/image/SkImage_Raster.cpp
@@ -11,7 +11,6 @@
 #include "SkCanvas.h"
 #include "SkData.h"
 #include "SkDecodingImageGenerator.h"
-#include "SkMallocPixelRef.h"
 
 class SkImage_Raster : public SkImage_Base {
 public: