Update static SkMutex to remove static initializer on Linux.

src/core/SkDeviceProfile.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #include "SkDeviceProfile.h"
+#include "SkThread.h"
 
 SK_DEFINE_INST_COUNT(SkDeviceProfile)
 
 #define DEFAULT_GAMMAEXP        2.2f
 #define DEFAULT_CONTRASTSCALE   0.5f
 #define DEFAULT_LCDCONFIG       SkDeviceProfile::kNone_LCDConfig
 #define DEFAULT_FONTHINTLEVEL   SkDeviceProfile::kSlight_FontHintLevel
 
 static float pin(float value, float min, float max) {
     if (value < min) {
@@ skipping 18 matching lines @@
 
 ///////////////////////////////////////////////////////////////////////////////
 
 SkDeviceProfile* SkDeviceProfile::Create(float gammaExp,
                                          float contrast,
                                          LCDConfig config,
                                          FontHintLevel level) {
     return SkNEW_ARGS(SkDeviceProfile, (gammaExp, contrast, config, level));
 }
 
-static SkMutex gMutex;
+SK_DECLARE_STATIC_MUTEX(gMutex);
 static SkDeviceProfile* gDefaultProfile;
 static SkDeviceProfile* gGlobalProfile;
 
 SkDeviceProfile* SkDeviceProfile::GetDefault() {
     SkAutoMutexAcquire amc(gMutex);
 
     if (NULL == gDefaultProfile) {
         gDefaultProfile = SkDeviceProfile::Create(DEFAULT_GAMMAEXP,
                                                   DEFAULT_CONTRASTSCALE,
                                                   DEFAULT_LCDCONFIG,
@@ skipping 10 matching lines @@
     }
     gGlobalProfile->ref();
     return gGlobalProfile;
 }
 
 void SkDeviceProfile::SetGlobal(SkDeviceProfile* profile) {
     SkAutoMutexAcquire amc(gMutex);
 
     SkRefCnt_SafeAssign(gGlobalProfile, profile);
 }