Revert of Work around for nexus 6 TexSubImage issue

include/gpu/GrCaps.h

Index: include/gpu/GrCaps.h
diff --git a/include/gpu/GrCaps.h b/include/gpu/GrCaps.h
index c5789fc0dce557a4df3ede29c271d4b3cb82c445..54969c59333f3ad0c8e5816dde3fa72cd336f7b8 100644
--- a/include/gpu/GrCaps.h
+++ b/include/gpu/GrCaps.h
@@ -133,9 +133,6 @@
     bool textureBarrierSupport() const { return fTextureBarrierSupport; }
 
     bool useDrawInsteadOfClear() const { return fUseDrawInsteadOfClear; }
-    bool useDrawInsteadOfPartialTextureWrite() const {
-        return fUseDrawInsteadOfPartialTextureWrite;
-    }
 
     /**
      * Indicates the capabilities of the fixed function blend unit.
@@ -223,19 +220,18 @@
 
     SkAutoTUnref<GrShaderCaps>    fShaderCaps;
 
-    bool fNPOTTextureTileSupport                : 1;
-    bool fMipMapSupport                         : 1;
-    bool fTwoSidedStencilSupport                : 1;
-    bool fStencilWrapOpsSupport                 : 1;
-    bool fDiscardRenderTargetSupport            : 1;
-    bool fReuseScratchTextures                  : 1;
-    bool fGpuTracingSupport                     : 1;
-    bool fCompressedTexSubImageSupport          : 1;
-    bool fOversizedStencilSupport               : 1;
-    bool fTextureBarrierSupport                 : 1;
+    bool fNPOTTextureTileSupport        : 1;
+    bool fMipMapSupport                 : 1;
+    bool fTwoSidedStencilSupport        : 1;
+    bool fStencilWrapOpsSupport         : 1;
+    bool fDiscardRenderTargetSupport    : 1;
+    bool fReuseScratchTextures          : 1;
+    bool fGpuTracingSupport             : 1;
+    bool fCompressedTexSubImageSupport  : 1;
+    bool fOversizedStencilSupport       : 1;
+    bool fTextureBarrierSupport         : 1;
     // Driver workaround
-    bool fUseDrawInsteadOfClear                 : 1;
-    bool fUseDrawInsteadOfPartialTextureWrite   : 1;
+    bool fUseDrawInsteadOfClear         : 1;
 
     BlendEquationSupport fBlendEquationSupport;
     uint32_t fAdvBlendEqBlacklist;