The plain Makefile was using -Wall, but the gyp build wasn't.  This CL turns on
-Wall -Wextra and -Wno-unused in common.gypi.  This revealed a lot of warnings
(and some actual bugs), all of which I fixed here.  This is pretty mindless
stuff for the most part (order of intialization, missing initializers, && within
||, etc), but will allow us to build cleanly with -Wall and -Wextra (and
-Werror, if we so choose).

I put defaults into switches that were missing cases.  I could put in the actual
missing enums instead if that's desired.  I could also assert on missing enums
instead of break, if that's desired.  I wasn't sure how to test the stuff in
"animator", so that should be looked at a bit more closely.

Review URL:  http://codereview.appspot.com/4547055/



git-svn-id: http://skia.googlecode.com/svn/trunk@1386 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/samplecode/SamplePath.cpp b/samplecode/SamplePath.cpp
index 4fef377..cd45ed9 100644
--- a/samplecode/SamplePath.cpp
+++ b/samplecode/SamplePath.cpp
@@ -168,9 +168,9 @@
             SkPaint::kRound_Join
         };
 
-        for (int i = 0; i < SK_ARRAY_COUNT(gJoins); i++) {
+        for (size_t i = 0; i < SK_ARRAY_COUNT(gJoins); i++) {
             canvas->save();
-            for (int j = 0; j < SK_ARRAY_COUNT(fPath); j++) {
+            for (size_t j = 0; j < SK_ARRAY_COUNT(fPath); j++) {
                 this->drawPath(canvas, fPath[j], gJoins[i]);
                 canvas->translate(SkIntToScalar(200), 0);
             }