Removed unused parameters

I removed unused parameters wherever it was trivial to do so.
Review URL: https://codereview.chromium.org/12469002

git-svn-id: http://skia.googlecode.com/svn/trunk@8068 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/effects/gradients/SkRadialGradient.cpp b/src/effects/gradients/SkRadialGradient.cpp
index ff3a2aa..3f670ad 100644
--- a/src/effects/gradients/SkRadialGradient.cpp
+++ b/src/effects/gradients/SkRadialGradient.cpp
@@ -554,7 +554,7 @@
 /////////////////////////////////////////////////////////////////////
 
 void GrGLRadialGradient::emitCode(GrGLShaderBuilder* builder,
-                                  const GrEffectStage& stage,
+                                  const GrEffectStage&,
                                   EffectKey key,
                                   const char* vertexCoords,
                                   const char* outputColor,
diff --git a/src/effects/gradients/SkSweepGradient.cpp b/src/effects/gradients/SkSweepGradient.cpp
index fe516ba..44b03d6 100644
--- a/src/effects/gradients/SkSweepGradient.cpp
+++ b/src/effects/gradients/SkSweepGradient.cpp
@@ -464,7 +464,7 @@
 /////////////////////////////////////////////////////////////////////
 
 void GrGLSweepGradient::emitCode(GrGLShaderBuilder* builder,
-                                 const GrEffectStage& stage,
+                                 const GrEffectStage&,
                                  EffectKey key,
                                  const char* vertexCoords,
                                  const char* outputColor,
diff --git a/src/effects/gradients/SkTwoPointConicalGradient.cpp b/src/effects/gradients/SkTwoPointConicalGradient.cpp
index f56e7b4..d3fb4dd 100644
--- a/src/effects/gradients/SkTwoPointConicalGradient.cpp
+++ b/src/effects/gradients/SkTwoPointConicalGradient.cpp
@@ -484,7 +484,7 @@
 }
 
 void GrGLConical2Gradient::emitCode(GrGLShaderBuilder* builder,
-                                    const GrEffectStage& stage,
+                                    const GrEffectStage&,
                                     EffectKey key,
                                     const char* vertexCoords,
                                     const char* outputColor,
diff --git a/src/effects/gradients/SkTwoPointRadialGradient.cpp b/src/effects/gradients/SkTwoPointRadialGradient.cpp
index 40e2ac3..0bf308b 100644
--- a/src/effects/gradients/SkTwoPointRadialGradient.cpp
+++ b/src/effects/gradients/SkTwoPointRadialGradient.cpp
@@ -531,7 +531,7 @@
 }
 
 void GrGLRadial2Gradient::emitCode(GrGLShaderBuilder* builder,
-                                   const GrEffectStage& stage,
+                                   const GrEffectStage&,
                                    EffectKey key,
                                    const char* vertexCoords,
                                    const char* outputColor,