Make header files idempotent; script to check

Change-Id: I960ded854e6bc7cdee029a7393cac2a686c41754
Reviewed-on: https://skia-review.googlesource.com/8308
Commit-Queue: Hal Canary <halcanary@google.com>
Reviewed-by: Mike Klein <mtklein@chromium.org>

14 files changed, 44 insertions, 1 deletions

diff --git a/src/android/SkBitmapRegionCodec.h b/src/android/SkBitmapRegionCodec.h
index c59879b68d..b3b0637432 100644
--- a/src/android/SkBitmapRegionCodec.h
+++ b/src/android/SkBitmapRegionCodec.h
@@ -5,6 +5,9 @@
  * found in the LICENSE file.
  */
 
+#ifndef SkBitmapRegionCodec_DEFINED
+#define SkBitmapRegionCodec_DEFINED
+
 #include "SkBitmap.h"
 #include "SkBitmapRegionDecoder.h"
 #include "SkAndroidCodec.h"
@@ -35,3 +38,4 @@ private:
     typedef SkBitmapRegionDecoder INHERITED;
 
 };
+#endif  // SkBitmapRegionCodec_DEFINED
diff --git a/src/codec/SkBmpMaskCodec.h b/src/codec/SkBmpMaskCodec.h
index 939a4d8adf..50e285dff3 100644
--- a/src/codec/SkBmpMaskCodec.h
+++ b/src/codec/SkBmpMaskCodec.h
@@ -5,6 +5,9 @@
  * found in the LICENSE file.
  */
 
+#ifndef SkBmpMaskCodec_DEFINED
+#define SkBmpMaskCodec_DEFINED
+
 #include "SkBmpCodec.h"
 #include "SkImageInfo.h"
 #include "SkMaskSwizzler.h"
@@ -58,3 +61,4 @@ private:
 
     typedef SkBmpCodec INHERITED;
 };
+#endif  // SkBmpMaskCodec_DEFINED
diff --git a/src/codec/SkBmpRLECodec.h b/src/codec/SkBmpRLECodec.h
index 8ea3a86dba..030e82731f 100644
--- a/src/codec/SkBmpRLECodec.h
+++ b/src/codec/SkBmpRLECodec.h
@@ -4,6 +4,8 @@
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
+#ifndef SkBmpRLECodec_DEFINED
+#define SkBmpRLECodec_DEFINED
 
 #include "SkBmpCodec.h"
 #include "SkColorTable.h"
@@ -114,3 +116,4 @@ private:
 
     typedef SkBmpCodec INHERITED;
 };
+#endif  // SkBmpRLECodec_DEFINED
diff --git a/src/codec/SkBmpStandardCodec.h b/src/codec/SkBmpStandardCodec.h
index 61b2792404..740db8ead0 100644
--- a/src/codec/SkBmpStandardCodec.h
+++ b/src/codec/SkBmpStandardCodec.h
@@ -4,6 +4,8 @@
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
+#ifndef SkBmpStandardCodec_DEFINED
+#define SkBmpStandardCodec_DEFINED
 
 #include "SkBmpCodec.h"
 #include "SkColorTable.h"
@@ -98,3 +100,4 @@ private:
 
     typedef SkBmpCodec INHERITED;
 };
+#endif  // SkBmpStandardCodec_DEFINED
diff --git a/src/codec/SkCodecImageGenerator.h b/src/codec/SkCodecImageGenerator.h
index e1aa2209dd..51086eb0a8 100644
--- a/src/codec/SkCodecImageGenerator.h
+++ b/src/codec/SkCodecImageGenerator.h
@@ -4,6 +4,8 @@
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
+#ifndef SkCodecImageGenerator_DEFINED
+#define SkCodecImageGenerator_DEFINED
 
 #include "SkCodec.h"
 #include "SkColorTable.h"
@@ -47,3 +49,4 @@ private:
 
     typedef SkImageGenerator INHERITED;
 };
+#endif  // SkCodecImageGenerator_DEFINED
diff --git a/src/codec/SkGifCodec.h b/src/codec/SkGifCodec.h
index 9e980abafa..67654d3b55 100644
--- a/src/codec/SkGifCodec.h
+++ b/src/codec/SkGifCodec.h
@@ -4,6 +4,8 @@
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
+#ifndef SkGifCodec_DEFINED
+#define SkGifCodec_DEFINED
 
 #include "SkCodec.h"
 #include "SkCodecAnimation.h"
@@ -152,3 +154,4 @@ private:
 
     typedef SkCodec INHERITED;
 };
+#endif  // SkGifCodec_DEFINED
diff --git a/src/codec/SkIcoCodec.h b/src/codec/SkIcoCodec.h
index e8dcc83f59..f9a14eb377 100644
--- a/src/codec/SkIcoCodec.h
+++ b/src/codec/SkIcoCodec.h
@@ -4,6 +4,8 @@
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
+#ifndef SkIcoCodec_DEFINED
+#define SkIcoCodec_DEFINED
 
 #include "SkCodec.h"
 #include "SkImageInfo.h"
@@ -99,3 +101,4 @@ private:
 
     typedef SkCodec INHERITED;
 };
+#endif  // SkIcoCodec_DEFINED
diff --git a/src/codec/SkPngCodec.h b/src/codec/SkPngCodec.h
index 7fdec01e11..7a2ebae210 100644
--- a/src/codec/SkPngCodec.h
+++ b/src/codec/SkPngCodec.h
@@ -4,6 +4,8 @@
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
+#ifndef SkPngCodec_DEFINED
+#define SkPngCodec_DEFINED
 
 #include "SkCodec.h"
 #include "SkColorSpaceXform.h"
@@ -138,3 +140,4 @@ private:
 
     typedef SkCodec INHERITED;
 };
+#endif  // SkPngCodec_DEFINED
diff --git a/src/core/SkColorSpacePriv.h b/src/core/SkColorSpacePriv.h
index 26ccd5e6ca..e1b01b707f 100644
--- a/src/core/SkColorSpacePriv.h
+++ b/src/core/SkColorSpacePriv.h
@@ -4,6 +4,8 @@
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
+#ifndef SkColorSpacePriv_DEFINED
+#define SkColorSpacePriv_DEFINED
 
 #include <math.h>
 
@@ -192,3 +194,4 @@ static inline bool named_to_parametric(SkColorSpaceTransferFn* coeffs,
             return false;
     }
 }
+#endif  // SkColorSpacePriv_DEFINED
diff --git a/src/core/SkPictureCommon.h b/src/core/SkPictureCommon.h
index 51724afcb5..6f6a9f1fcf 100644
--- a/src/core/SkPictureCommon.h
+++ b/src/core/SkPictureCommon.h
@@ -4,6 +4,8 @@
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
+#ifndef SkPictureCommon_DEFINED
+#define SkPictureCommon_DEFINED
 
 // Some shared code used by both SkBigPicture and SkMiniPicture.
 //   SkTextHunter   -- SkRecord visitor that returns true when the op draws text.
@@ -138,3 +140,4 @@ struct SkPathCounter {
 
     int fNumSlowPathsAndDashEffects;
 };
+#endif  // SkPictureCommon_DEFINED
diff --git a/src/core/SkRecordedDrawable.h b/src/core/SkRecordedDrawable.h
index de1fca5233..c7ba74143e 100644
--- a/src/core/SkRecordedDrawable.h
+++ b/src/core/SkRecordedDrawable.h
@@ -4,6 +4,8 @@
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
+#ifndef SkRecordedDrawable_DEFINED
+#define SkRecordedDrawable_DEFINED
 
 #include "SkBBoxHierarchy.h"
 #include "SkDrawable.h"
@@ -39,3 +41,4 @@ private:
     std::unique_ptr<SkDrawableList> fDrawableList;
     const SkRect                    fBounds;
 };
+#endif  // SkRecordedDrawable_DEFINED
diff --git a/src/core/SkTraceEventCommon.h b/src/core/SkTraceEventCommon.h
index 57f67775e8..d066d903c2 100644
--- a/src/core/SkTraceEventCommon.h
+++ b/src/core/SkTraceEventCommon.h
@@ -1,6 +1,8 @@
 // Copyright 2015 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.
+#ifndef SkTraceEventCommon_DEFINED
+#define SkTraceEventCommon_DEFINED
 
 // This header file defines the set of trace_event macros without specifying
 // how the events actually get collected and stored. If you need to expose trace
@@ -1037,3 +1039,4 @@
 #define TRACE_EVENT_SCOPE_NAME_GLOBAL ('g')
 #define TRACE_EVENT_SCOPE_NAME_PROCESS ('p')
 #define TRACE_EVENT_SCOPE_NAME_THREAD ('t')
+#endif  // SkTraceEventCommon_DEFINED
diff --git a/src/effects/SkEmbossMask_Table.h b/src/effects/SkEmbossMask_Table.h
index b7073f302b..09fc348b38 100644
--- a/src/effects/SkEmbossMask_Table.h
+++ b/src/effects/SkEmbossMask_Table.h
@@ -4,7 +4,8 @@
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
-
+#ifndef SkEmbossMask_Table_DEFINED
+#define SkEmbossMask_Table_DEFINED
 
 #include "SkTypes.h"
 
@@ -1035,3 +1036,4 @@ static const uint16_t gInvSqrtTable[128 * 128] = {
     0x00C0, 0x00C0, 0x00BF, 0x00BE, 0x00BE, 0x00BD, 0x00BC, 0x00BC, 0x00BB, 0x00BA, 0x00BA, 0x00B9, 0x00B8, 0x00B8, 0x00B7, 0x00B6
 };
 #define kDeltaUsedToBuildTable  32
+#endif  // SkEmbossMask_Table_DEFINED
diff --git a/src/images/transform_scanline.h b/src/images/transform_scanline.h
index d855964989..3c754275e0 100644
--- a/src/images/transform_scanline.h
+++ b/src/images/transform_scanline.h
@@ -4,6 +4,8 @@
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
+#ifndef transform_scanline_DEFINED
+#define transform_scanline_DEFINED
 
 /**
  * Functions to transform scanlines between packed-pixel formats.
@@ -271,3 +273,4 @@ static inline void transform_scanline_F16_premul_to_8888(char* SK_RESTRICT dst,
     p.append(SkRasterPipeline::store_8888, (void**) &dst);
     p.run(0, width);
 }
+#endif  // transform_scanline_DEFINED