add colortable support to imagegenerator

tests/CachedDecodingPixelRefTest.cpp

Index: tests/CachedDecodingPixelRefTest.cpp
diff --git a/tests/CachedDecodingPixelRefTest.cpp b/tests/CachedDecodingPixelRefTest.cpp
index 10e33ba841be16bbb079ad4397a340a53bd949c2..eff77e215da9ab68e8cfb47dd8e8ef3430756e7a 100644
--- a/tests/CachedDecodingPixelRefTest.cpp
+++ b/tests/CachedDecodingPixelRefTest.cpp
@@ -183,7 +183,9 @@ public:
         SkASSERT((fType <= kLast_TestType) && (fType >= 0));
     }
     virtual ~TestImageGenerator() { }
-    virtual bool getInfo(SkImageInfo* info) SK_OVERRIDE {
+
+protected:
+    virtual bool onGetInfo(SkImageInfo* info) SK_OVERRIDE {
         REPORTER_ASSERT(fReporter, NULL != info);
         if ((NULL == info) || (kFailGetInfo_TestType == fType)) {
             return false;
@@ -194,9 +196,9 @@ public:
         info->fAlphaType = kOpaque_SkAlphaType;
         return true;
     }
-    virtual bool getPixels(const SkImageInfo& info,
-                           void* pixels,
-                           size_t rowBytes) SK_OVERRIDE {
+
+    virtual bool onGetPixels(const SkImageInfo& info, void* pixels, size_t rowBytes,
+                             SkPMColor ctable[], int* ctableCount) SK_OVERRIDE {
         REPORTER_ASSERT(fReporter, pixels != NULL);
         size_t minRowBytes
             = static_cast<size_t>(info.fWidth * info.bytesPerPixel());