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/SampleShaderText.cpp b/samplecode/SampleShaderText.cpp
index 790137c..2748b55 100644
--- a/samplecode/SampleShaderText.cpp
+++ b/samplecode/SampleShaderText.cpp
@@ -11,7 +11,7 @@
 
     SkCanvas    canvas(*bm);
     SkScalar s = SkIntToScalar(w < h ? w : h);
-    SkPoint     pts[] = { 0, 0, s, s };
+    SkPoint     pts[] = { { 0, 0 }, { s, s } };
     SkColor     colors[] = { SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE };
     SkScalar    pos[] = { 0, SK_Scalar1/2, SK_Scalar1 };
     SkPaint     paint;