Eliminate SkFILE: it always is the same as FILE.

Review URL: https://codereview.chromium.org/1467533003
diff --git a/tests/DataRefTest.cpp b/tests/DataRefTest.cpp
index 177c9d3..0c7d5f4 100644
--- a/tests/DataRefTest.cpp
+++ b/tests/DataRefTest.cpp
@@ -191,7 +191,7 @@
         writer.write(s, 26);
     }
 
-    SkFILE* file = sk_fopen(path.c_str(), kRead_SkFILE_Flag);
+    FILE* file = sk_fopen(path.c_str(), kRead_SkFILE_Flag);
     SkAutoTUnref<SkData> r1(SkData::NewFromFILE(file));
     REPORTER_ASSERT(reporter, r1.get() != nullptr);
     REPORTER_ASSERT(reporter, r1->size() == 26);
diff --git a/tests/PathOpsSkpClipTest.cpp b/tests/PathOpsSkpClipTest.cpp
index 7b63c1c..f82d75d 100644
--- a/tests/PathOpsSkpClipTest.cpp
+++ b/tests/PathOpsSkpClipTest.cpp
@@ -683,7 +683,7 @@
         return;
     }
     statusFile.appendf("%s%s", PATH_SLASH, statName.c_str());
-    SkFILE* file = sk_fopen(statusFile.c_str(), kWrite_SkFILE_Flag);
+    FILE* file = sk_fopen(statusFile.c_str(), kWrite_SkFILE_Flag);
     if (!file) {
             SkDebugf("failed to create %s", statusFile.c_str());
             return;