Add UMA for testing whether the Chromium library was page aligned in the APK file.

third_party/android_crazy_linker/src/src/crazy_linker_zip.h

Index: third_party/android_crazy_linker/src/src/crazy_linker_zip.h
diff --git a/third_party/android_crazy_linker/src/src/crazy_linker_zip.h b/third_party/android_crazy_linker/src/src/crazy_linker_zip.h
index 6e289c064892e199b1ef2844c2aa9871c4d089c5..75adcf8aac8df76445b68135a642f9898b299e5e 100644
--- a/third_party/android_crazy_linker/src/src/crazy_linker_zip.h
+++ b/third_party/android_crazy_linker/src/src/crazy_linker_zip.h
@@ -7,12 +7,16 @@
 
 // Definitions related to supporting loading libraries from zip files.
 
+// Offset in a file indicating a failure.
+#define CRAZY_OFFSET_FAILED (-1)
+
 namespace crazy {
 
 // Find "filename" in the specified "zip_file" and return the offset
-// in the file of the start of the data for the file. Return -1 on error.
-// This routine replaces code which used the minizip library, but is about
-// 150 times faster, locating the offset in less than 0.5ms on a Nexus 4.
+// in the file of the start of the data for the file. Return
+// CRAZY_OFFSET_FAILED on error. This routine replaces code which used the
+// minizip library, but is about 150 times faster, locating the offset in less
+// than 0.5ms on a Nexus 4.
 int FindStartOffsetOfFileInZipFile(const char* zip_file, const char* filename);
 
 }