Revert of add colortable support to imagegenerator

tests/DrawBitmapRectTest.cpp

Index: tests/DrawBitmapRectTest.cpp
diff --git a/tests/DrawBitmapRectTest.cpp b/tests/DrawBitmapRectTest.cpp
index aa69de4bd4f6d5369a9e278c2e117e6607d338de..f294ae7e6e44bf99c930c13a42dddf95afc30765 100644
--- a/tests/DrawBitmapRectTest.cpp
+++ b/tests/DrawBitmapRectTest.cpp
@@ -22,16 +22,20 @@
 public:
     FailureImageGenerator() { }
     virtual ~FailureImageGenerator() { }
-    
-protected:
-    virtual bool onGetInfo(SkImageInfo* info) SK_OVERRIDE {
+    virtual bool getInfo(SkImageInfo* info) SK_OVERRIDE {
         info->fWidth = 100;
         info->fHeight = 100;
         info->fColorType = kN32_SkColorType;
         info->fAlphaType = kPremul_SkAlphaType;
         return true;
     }
-    // default onGetPixels() returns false, which is what we want.
+    virtual bool getPixels(const SkImageInfo& info,
+                           void* pixels,
+                           size_t rowBytes) SK_OVERRIDE {
+        // this will deliberately return false if they are asking us
+        // to decode into pixels.
+        return false;
+    }
 };
 
 // crbug.com/295895