Hide fields in SkImageInfo

R=rmistry@google.com
TBR=bsalomon

Author: reed@google.com

Review URL: https://codereview.chromium.org/536003002
diff --git a/src/gpu/GrSurface.cpp b/src/gpu/GrSurface.cpp
index 54497fe..52ab4fd 100644
--- a/src/gpu/GrSurface.cpp
+++ b/src/gpu/GrSurface.cpp
@@ -13,14 +13,11 @@
 #include <stdio.h>
 
 SkImageInfo GrSurface::info() const {
-    SkImageInfo info;
-    if (!GrPixelConfig2ColorType(this->config(), &info.fColorType)) {
+    SkColorType colorType;
+    if (!GrPixelConfig2ColorType(this->config(), &colorType)) {
         sk_throw();
     }
-    info.fWidth = this->width();
-    info.fHeight = this->height();
-    info.fAlphaType = kPremul_SkAlphaType;
-    return info;
+    return SkImageInfo::Make(this->width(), this->height(), colorType, kPremul_SkAlphaType);
 }
 
 bool GrSurface::savePixels(const char* filename) {
diff --git a/src/gpu/SkGpuDevice.cpp b/src/gpu/SkGpuDevice.cpp
index d26d4f8..1b6558c 100644
--- a/src/gpu/SkGpuDevice.cpp
+++ b/src/gpu/SkGpuDevice.cpp
@@ -168,17 +168,19 @@
         return NULL;
     }
 
-    SkImageInfo info = origInfo;
+    SkColorType ct = origInfo.colorType();
+    SkAlphaType at = origInfo.alphaType();
     // TODO: perhas we can loosen this check now that colortype is more detailed
     // e.g. can we support both RGBA and BGRA here?
-    if (kRGB_565_SkColorType == info.colorType()) {
-        info.fAlphaType = kOpaque_SkAlphaType;  // force this setting
+    if (kRGB_565_SkColorType == ct) {
+        at = kOpaque_SkAlphaType;  // force this setting
     } else {
-        info.fColorType = kN32_SkColorType;
-        if (kOpaque_SkAlphaType != info.alphaType()) {
-            info.fAlphaType = kPremul_SkAlphaType;  // force this setting
+        ct = kN32_SkColorType;
+        if (kOpaque_SkAlphaType != at) {
+            at = kPremul_SkAlphaType;  // force this setting
         }
     }
+    const SkImageInfo info = SkImageInfo::Make(origInfo.width(), origInfo.height(), ct, at);
 
     GrTextureDesc desc;
     desc.fFlags = kRenderTarget_GrTextureFlagBit;
diff --git a/src/gpu/SkGrPixelRef.cpp b/src/gpu/SkGrPixelRef.cpp
index 2371ea7..f56c3b6 100644
--- a/src/gpu/SkGrPixelRef.cpp
+++ b/src/gpu/SkGrPixelRef.cpp
@@ -116,8 +116,8 @@
     fUnlock = transferCacheLock;
 
     if (fSurface) {
-        SkASSERT(info.fWidth <= fSurface->width());
-        SkASSERT(info.fHeight <= fSurface->height());
+        SkASSERT(info.width() <= fSurface->width());
+        SkASSERT(info.height() <= fSurface->height());
     }
 }
 
@@ -166,9 +166,9 @@
         height = subset->height();
     } else {
         left = 0;
-        width = this->info().fWidth;
+        width = this->info().width();
         top = 0;
-        height = this->info().fHeight;
+        height = this->info().height();
     }
     if (!dst->tryAllocN32Pixels(width, height)) {
         SkDebugf("SkGrPixelRef::onReadPixels failed to alloc bitmap for result!\n");