Recognize that ES3 supports texture storage. Add workaround for apparent Adreno bug.

src/gpu/gl/GrGLUtil.cpp

Index: src/gpu/gl/GrGLUtil.cpp
===================================================================
--- src/gpu/gl/GrGLUtil.cpp	(revision 10811)
+++ src/gpu/gl/GrGLUtil.cpp	(working copy)
@@ -206,6 +206,9 @@
         if (0 == strcmp(vendorString, "Intel")) {
             return kIntel_GrGLVendor;
         }
+        if (0 == strcmp(vendorString, "Qualcomm")) {
+            return kQualcomm_GrGLVendor;
+        }
     }
     return kOther_GrGLVendor;
 }