Removing "using" declarations that import names in the C++ Standard library.(Source/platform/audio)

Source/platform/audio/DynamicsCompressorKernel.cpp

Index: Source/platform/audio/DynamicsCompressorKernel.cpp
diff --git a/Source/platform/audio/DynamicsCompressorKernel.cpp b/Source/platform/audio/DynamicsCompressorKernel.cpp
index fca2d7c37ba1cd6086918b93f9602aea30454d75..1b03ca50665bc1f6c74efd2a594ad3935f0814bb 100644
--- a/Source/platform/audio/DynamicsCompressorKernel.cpp
+++ b/Source/platform/audio/DynamicsCompressorKernel.cpp
@@ -37,8 +37,6 @@
 #include "platform/audio/DenormalDisabler.h"
 #include "wtf/MathExtras.h"
 
-using namespace std;
-
 namespace blink {
 
 using namespace AudioUtilities;
@@ -240,7 +238,7 @@ void DynamicsCompressorKernel::process(const float* sourceChannels[],
     float masterLinearGain = decibelsToLinear(dbPostGain) * fullRangeMakeupGain;
 
     // Attack parameters.
-    attackTime = max(0.001f, attackTime);
+    attackTime = std::max(0.001f, attackTime);
     float attackFrames = attackTime * sampleRate;
 
     // Release parameters.
@@ -323,8 +321,8 @@ void DynamicsCompressorKernel::process(const float* sourceChannels[],
 
             // Contain within range: -12 -> 0 then scale to go from 0 -> 3
             float x = compressionDiffDb;
-            x = max(-12.0f, x);
-            x = min(0.0f, x);
+            x = std::max(-12.0f, x);
+            x = std::min(0.0f, x);
             x = 0.25f * (x + 12);
 
             // Compute adaptive release curve using 4th order polynomial.
@@ -352,7 +350,7 @@ void DynamicsCompressorKernel::process(const float* sourceChannels[],
             if (m_maxAttackCompressionDiffDb == -1 || m_maxAttackCompressionDiffDb < compressionDiffDb)
                 m_maxAttackCompressionDiffDb = compressionDiffDb;
 
-            float effAttenDiffDb = max(0.5f, m_maxAttackCompressionDiffDb);
+            float effAttenDiffDb = std::max(0.5f, m_maxAttackCompressionDiffDb);
 
             float x = 0.25f / effAttenDiffDb;
             envelopeRate = 1 - powf(x, 1 / attackFrames);
@@ -397,7 +395,7 @@ void DynamicsCompressorKernel::process(const float* sourceChannels[],
                 float attenuation = absInput <= 0.0001f ? 1 : shapedInput / absInput;
 
                 float attenuationDb = -linearToDecibels(attenuation);
-                attenuationDb = max(2.0f, attenuationDb);
+                attenuationDb = std::max(2.0f, attenuationDb);
 
                 float dbPerFrame = attenuationDb / satReleaseFrames;
 
@@ -407,7 +405,7 @@ void DynamicsCompressorKernel::process(const float* sourceChannels[],
                 float rate = isRelease ? satReleaseRate : 1;
 
                 detectorAverage += (attenuation - detectorAverage) * rate;
-                detectorAverage = min(1.0f, detectorAverage);
+                detectorAverage = std::min(1.0f, detectorAverage);
 
                 // Fix gremlins.
                 if (std::isnan(detectorAverage))
@@ -422,7 +420,7 @@ void DynamicsCompressorKernel::process(const float* sourceChannels[],
                 } else {
                     // Release - exponentially increase gain to 1.0
                     compressorGain *= envelopeRate;
-                    compressorGain = min(1.0f, compressorGain);
+                    compressorGain = std::min(1.0f, compressorGain);
                 }
 
                 // Warp pre-compression gain to smooth out sharp exponential transition points.
@@ -432,7 +430,7 @@ void DynamicsCompressorKernel::process(const float* sourceChannels[],
                 float totalGain = dryMix + wetMix * masterLinearGain * postWarpCompressorGain;
 
                 // Calculate metering.
-                float dbRealGain = 20 * log10(postWarpCompressorGain);
+                float dbRealGain = 20 * std::log10(postWarpCompressorGain);
                 if (dbRealGain < m_meteringGain)
                     m_meteringGain = dbRealGain;
                 else