Constify the arguments to createTexture

R=bsalomon@google.com, robertphillips@google.com

Author: krajcevski@google.com

Review URL: https://codereview.chromium.org/301993002

git-svn-id: http://skia.googlecode.com/svn/trunk/include@14975 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/gpu/GrContext.h b/gpu/GrContext.h
index b28c444..5b7ef25 100644
--- a/gpu/GrContext.h
+++ b/gpu/GrContext.h
@@ -213,7 +213,7 @@
     GrTexture* createTexture(const GrTextureParams* params,
                              const GrTextureDesc& desc,
                              const GrCacheID& cacheID,
-                             void* srcData,
+                             const void* srcData,
                              size_t rowBytes,
                              GrResourceKey* cacheKey = NULL);
 
@@ -1000,7 +1000,7 @@
 
     GrTexture* createResizedTexture(const GrTextureDesc& desc,
                                     const GrCacheID& cacheID,
-                                    void* srcData,
+                                    const void* srcData,
                                     size_t rowBytes,
                                     bool filter);