Fix warnings on Ubuntu13

Turn off warnings when building libwebp.
Turn off warnings when building libjpeg.
Initialize some variables immediately.

NOTRY=True
NOTREECHECKS=True

BUG=skia:2213
BUG=skia:2214
R=bsalomon@google.com, halcanary@google.com

Author: scroggo@google.com

Review URL: https://codereview.chromium.org/175383002

git-svn-id: http://skia.googlecode.com/svn/trunk@13545 2bbb7eff-a529-9590-31e7-b0007b416f81

gyp/libjpeg.gyp

@@ -101,14 +101,10 @@
                   '../third_party/externals/libjpeg',
                 ],
               },
-              'conditions': [
-                [ 'skia_os != "win"', {
-                  'product_name': 'jpeg',
-                  'cflags': [
-                   '-Wno-main', # supresses warnings about naming things "main"
-                  ],
-                }],
+              'cflags': [
+                '-w', # supresses warnings
               ],
+
             },
           ],
         }, {

gyp/libwebp.gyp

@@ -34,6 +34,7 @@
             '../third_party/externals/libwebp/src/dec/vp8l.c',
             '../third_party/externals/libwebp/src/dec/webp.c',
           ],
+          'cflags': [ '-w' ],
         },
         {
           'target_name': 'libwebp_demux',
@@ -44,6 +45,7 @@
           'sources': [
             '../third_party/externals/libwebp/src/demux/demux.c',
           ],
+          'cflags': [ '-w' ],
         },
         {
           'target_name': 'libwebp_dsp',
@@ -62,6 +64,7 @@
             '../third_party/externals/libwebp/src/dsp/upsampling_sse2.c',
             '../third_party/externals/libwebp/src/dsp/yuv.c',
           ],
+          'cflags': [ '-w' ],
           'conditions': [
             ['skia_os == "android"', {
               'dependencies' : [
@@ -87,7 +90,7 @@
               'cflags!': [
                 '-mfpu=vfpv3-d16',
               ],
-              'cflags': [ '-mfpu=neon' ],
+              'cflags': [ '-mfpu=neon', '-w' ],
             },{  # !(arm_version >= 7)
               'type': 'none',
             }],
@@ -139,6 +142,7 @@
             '../third_party/externals/libwebp/src/utils/thread.c',
             '../third_party/externals/libwebp/src/utils/utils.c',
           ],
+          'cflags': [ '-w' ],
         },
         {
           'target_name': 'libwebp',

src/animator/SkDisplayType.cpp

@@ -372,7 +372,7 @@ const SkMemberInfo* SkDisplayType::GetMembers(SkAnimateMaker* maker,
 
 const SkMemberInfo* SkDisplayType::GetMember(SkAnimateMaker* maker,
         SkDisplayTypes type, const char** matchPtr ) {
-    int infoCount;
+    int infoCount = 0;  // Initialize to remove a warning.
     const SkMemberInfo* info = GetMembers(maker, type, &infoCount);
     info = SkMemberInfo::Find(info, infoCount, matchPtr);
 //  SkASSERT(info);

tests/GLProgramsTest.cpp

@@ -154,7 +154,7 @@ bool GrGpuGL::programUnitTest(int maxStages) {
 
         int currAttribIndex = 1;  // we need to always leave room for position
         int currTextureCoordSet = 0;
-        int attribIndices[2];
+        int attribIndices[2] = { 0, 0 };
         GrTexture* dummyTextures[] = {dummyTexture1.get(), dummyTexture2.get()};
 
         int numStages = random.nextULessThan(maxStages + 1);