Revert of Delete unused method aliases and texture flag. (patchset #1 id:1 of https://codereview.chromium.org/672753002/)

Reason for revert:
Need to remove one more reference to this in blink before relanding.

Original issue's description:
> Delete unused method aliases and texture flag.
>
> Committed: https://skia.googlesource.com/skia/+/7fdffe41494cbd78a8ee2a6ef0509e46ec77039f

TBR=robertphillips@google.com
NOTREECHECKS=true
NOTRY=true

Review URL: https://codereview.chromium.org/671203002

include/gpu/GrContext.h

@@ -122,6 +122,10 @@ public:
      *                          video memory that can be held in the cache.
      */
     void getResourceCacheLimits(int* maxResources, size_t* maxResourceBytes) const;
+    SK_ATTR_DEPRECATED("This function has been renamed to getResourceCacheLimits().")
+    void getTextureCacheLimits(int* maxTextures, size_t* maxTextureBytes) const {
+        this->getResourceCacheLimits(maxTextures, maxTextureBytes);
+    }
 
     /**
      *  Gets the current GPU resource cache usage.
@@ -133,6 +137,20 @@ public:
      */
     void getResourceCacheUsage(int* resourceCount, size_t* resourceBytes) const;
 
+    SK_ATTR_DEPRECATED("Use getResourceCacheUsage().")
+    size_t getGpuTextureCacheBytes() const {
+        size_t bytes;
+        this->getResourceCacheUsage(NULL, &bytes);
+        return bytes;
+    }
+
+    SK_ATTR_DEPRECATED("Use getResourceCacheUsage().")
+    int getGpuTextureCacheResourceCount() const {
+        int count;
+        this->getResourceCacheUsage(&count, NULL);
+        return count;
+    }
+
     /**
      *  Specify the GPU resource cache limits. If the current cache exceeds either
      *  of these, it will be purged (LRU) to keep the cache within these limits.
@@ -143,6 +161,10 @@ public:
      *                          that can be held in the cache.
      */
     void setResourceCacheLimits(int maxResources, size_t maxResourceBytes);
+    SK_ATTR_DEPRECATED("This function has been renamed to setResourceCacheLimits().")
+    void setTextureCacheLimits(int maxTextures, size_t maxTextureBytes) {
+        this->setResourceCacheLimits(maxTextures, maxTextureBytes);
+    }
 
     /**
      * Frees GPU created by the context. Can be called to reduce GPU memory

include/gpu/GrTexture.h

@@ -42,6 +42,23 @@ public:
      */
     virtual void textureParamsModified() = 0;
 
+    /**
+     * Informational texture flags. This will be removed soon.
+     */
+    enum FlagBits {
+        kFirstBit = (kLastPublic_GrTextureFlagBit << 1),
+
+        /**
+         * This texture should be returned to the texture cache when
+         * it is no longer reffed
+         */
+        kReturnToCache_FlagBit        = kFirstBit,
+    };
+
+    void resetFlag(GrTextureFlags flags) {
+        fDesc.fFlags = fDesc.fFlags & ~flags;
+    }
+
 #ifdef SK_DEBUG
     void validate() const {
         this->INHERITED::validate();

include/gpu/GrTypes.h

@@ -444,6 +444,9 @@ enum GrTextureFlags {
      * should be verified.
      */
     kCheckAllocation_GrTextureFlagBit  = 0x8,
+
+    kDummy_GrTextureFlagBit,
+    kLastPublic_GrTextureFlagBit = kDummy_GrTextureFlagBit-1,
 };
 
 GR_MAKE_BITFIELD_OPS(GrTextureFlags)

src/gpu/GrTexture.cpp

@@ -54,7 +54,7 @@ size_t GrTexture::gpuMemorySize() const {
 }
 
 void GrTexture::onRelease() {
-
+    SkASSERT(!this->texturePriv().isSetFlag((GrTextureFlags) kReturnToCache_FlagBit));
     INHERITED::onRelease();
 }