Remove unnecessary getColorSpace() API from SkCodec

Not needed since now we can get it from the SkImageInfo.

TBR=reed@google.com
BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2170793004

Review-Url: https://codereview.chromium.org/2170793004
diff --git a/bench/ColorCodecBench.cpp b/bench/ColorCodecBench.cpp
index 45bd293..e17d597 100644
--- a/bench/ColorCodecBench.cpp
+++ b/bench/ColorCodecBench.cpp
@@ -47,7 +47,7 @@
     codec->startScanlineDecode(fSrcInfo);
     SkASSERT(SkCodec::kSuccess == result);
 
-    sk_sp<SkColorSpace> srcSpace = sk_ref_sp(codec->getColorSpace());
+    sk_sp<SkColorSpace> srcSpace = sk_ref_sp(codec->getInfo().colorSpace());
     if (!srcSpace) {
         srcSpace = SkColorSpace::NewNamed(SkColorSpace::kSRGB_Named);
     }
diff --git a/dm/DMSrcSink.cpp b/dm/DMSrcSink.cpp
index 932d80f..f3f5f78 100644
--- a/dm/DMSrcSink.cpp
+++ b/dm/DMSrcSink.cpp
@@ -902,7 +902,7 @@
             break;
         case kDst_sRGB_Mode:
         case kDst_HPZR30w_Mode: {
-            sk_sp<SkColorSpace> srcSpace = sk_ref_sp(codec->getColorSpace());
+            sk_sp<SkColorSpace> srcSpace = sk_ref_sp(codec->getInfo().colorSpace());
             sk_sp<SkColorSpace> dstSpace = (kDst_sRGB_Mode == fMode) ?
                     SkColorSpace::NewNamed(SkColorSpace::kSRGB_Named) :
                     SkColorSpace::NewICC(dstData->data(), dstData->size());
diff --git a/include/codec/SkCodec.h b/include/codec/SkCodec.h
index 293068c..5c84e07 100644
--- a/include/codec/SkCodec.h
+++ b/include/codec/SkCodec.h
@@ -109,13 +109,6 @@
 
     const SkEncodedInfo& getEncodedInfo() const { return fEncodedInfo; }
 
-    /**
-     *  Returns the color space associated with the codec.
-     *  Does not affect ownership.
-     *  Might be NULL.
-     */
-    SkColorSpace* getColorSpace() const { return fColorSpace.get(); }
-
     enum Origin {
         kTopLeft_Origin     = 1, // Default
         kTopRight_Origin    = 2, // Reflected across y-axis
@@ -662,7 +655,6 @@
     const SkImageInfo           fSrcInfo;
     SkAutoTDelete<SkStream>     fStream;
     bool                        fNeedsRewind;
-    sk_sp<SkColorSpace>         fColorSpace;
     const Origin                fOrigin;
 
     // These fields are only meaningful during scanline decodes.
diff --git a/include/codec/SkEncodedInfo.h b/include/codec/SkEncodedInfo.h
index 60ad588..eb8c147 100644
--- a/include/codec/SkEncodedInfo.h
+++ b/include/codec/SkEncodedInfo.h
@@ -117,7 +117,7 @@
      * Returns an SkImageInfo with Skia color and alpha types that are the
      * closest possible match to the encoded info.
      */
-    SkImageInfo makeImageInfo(int width, int height, const sk_sp<SkColorSpace>& colorSpace) const {
+    SkImageInfo makeImageInfo(int width, int height, sk_sp<SkColorSpace> colorSpace) const {
         switch (fColor) {
             case kGray_Color:
                 SkASSERT(kOpaque_Alpha == fAlpha);
@@ -147,7 +147,7 @@
             case kYUVA_Color:
                 SkASSERT(kOpaque_Alpha != fAlpha);
                 return SkImageInfo::Make(width, height, kN32_SkColorType,
-                                         kUnpremul_SkAlphaType, colorSpace);
+                                         kUnpremul_SkAlphaType, std::move(colorSpace));
             default:
                 SkASSERT(false);
                 return SkImageInfo::MakeUnknown();
diff --git a/src/codec/SkCodec.cpp b/src/codec/SkCodec.cpp
index 3da7f5f..e5f9a07 100644
--- a/src/codec/SkCodec.cpp
+++ b/src/codec/SkCodec.cpp
@@ -117,10 +117,9 @@
 SkCodec::SkCodec(int width, int height, const SkEncodedInfo& info, SkStream* stream,
         sk_sp<SkColorSpace> colorSpace, Origin origin)
     : fEncodedInfo(info)
-    , fSrcInfo(info.makeImageInfo(width, height, colorSpace))
+    , fSrcInfo(info.makeImageInfo(width, height, std::move(colorSpace)))
     , fStream(stream)
     , fNeedsRewind(false)
-    , fColorSpace(std::move(colorSpace))
     , fOrigin(origin)
     , fDstInfo()
     , fOptions()
diff --git a/tests/ColorSpaceTest.cpp b/tests/ColorSpaceTest.cpp
index 442ed3d..df03ea4 100644
--- a/tests/ColorSpaceTest.cpp
+++ b/tests/ColorSpaceTest.cpp
@@ -65,7 +65,7 @@
     REPORTER_ASSERT(r, nullptr != codec);
 
 #if (PNG_LIBPNG_VER_MAJOR > 1) || (PNG_LIBPNG_VER_MAJOR == 1 && PNG_LIBPNG_VER_MINOR >= 6)
-    SkColorSpace* colorSpace = codec->getColorSpace();
+    SkColorSpace* colorSpace = codec->getInfo().colorSpace();
     REPORTER_ASSERT(r, nullptr != colorSpace);
 
     test_space(r, colorSpace, &g_sRGB_XYZ[0], &g_sRGB_XYZ[3], &g_sRGB_XYZ[6],
@@ -86,7 +86,7 @@
         return;
     }
 
-    SkColorSpace* colorSpace = codec->getColorSpace();
+    SkColorSpace* colorSpace = codec->getInfo().colorSpace();
     REPORTER_ASSERT(r, nullptr != colorSpace);
 
     const float red[] = { 0.385117f, 0.716904f, 0.0970612f };
diff --git a/tools/viewer/ImageSlide.cpp b/tools/viewer/ImageSlide.cpp
index 3ba6b58..b047154 100644
--- a/tools/viewer/ImageSlide.cpp
+++ b/tools/viewer/ImageSlide.cpp
@@ -41,7 +41,7 @@
     fImage->asLegacyBitmap(&fOriginalBitmap, SkImage::kRO_LegacyBitmapMode);
 
     SkAutoTDelete<SkCodec> codec(SkCodec::NewFromData(encoded.get()));
-    sk_sp<SkColorSpace> srcSpace = sk_ref_sp(codec->getColorSpace());
+    sk_sp<SkColorSpace> srcSpace = sk_ref_sp(codec->getInfo().colorSpace());
     sk_sp<SkColorSpace> dstSpace = SkColorSpace::NewNamed(SkColorSpace::kAdobeRGB_Named);
     std::unique_ptr<SkColorSpaceXform> xform = SkColorSpaceXform::New(srcSpace, dstSpace);
     fOriginalBitmap.deepCopyTo(&fXformedBitmap);
diff --git a/tools/visualize_color_gamut.cpp b/tools/visualize_color_gamut.cpp
index bc40152..4d340f8 100644
--- a/tools/visualize_color_gamut.cpp
+++ b/tools/visualize_color_gamut.cpp
@@ -151,7 +151,7 @@
     }
 
     // Draw gamut for the input image.
-    sk_sp<SkColorSpace> colorSpace = sk_ref_sp(codec->getColorSpace());
+    sk_sp<SkColorSpace> colorSpace = sk_ref_sp(codec->getInfo().colorSpace());
     if (!colorSpace) {
         SkDebugf("Image had no embedded color space information.  Defaulting to sRGB.\n");
         colorSpace = SkColorSpace::NewNamed(SkColorSpace::kSRGB_Named);