android: Add ToJavaFloatArray JNI utility.

base/android/jni_array.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef BASE_ANDROID_JNI_ARRAY_H_
 #define BASE_ANDROID_JNI_ARRAY_H_
 
 #include <jni.h>
 #include <stddef.h>
 #include <stdint.h>
@@ skipping 24 matching lines @@
 
 // Returns a new Java long array converted from the given int64_t array.
 BASE_EXPORT ScopedJavaLocalRef<jlongArray> ToJavaLongArray(JNIEnv* env,
                                                            const int64_t* longs,
                                                            size_t len);
 
 BASE_EXPORT ScopedJavaLocalRef<jlongArray> ToJavaLongArray(
     JNIEnv* env,
     const std::vector<int64_t>& longs);
 
+// Returns a new Java float array converted from the given C++ float array.
+BASE_EXPORT ScopedJavaLocalRef<jfloatArray> ToJavaFloatArray(
+    JNIEnv* env, const float* floats, size_t len);
+
+BASE_EXPORT ScopedJavaLocalRef<jfloatArray> ToJavaFloatArray(
+    JNIEnv* env,
+    const std::vector<float>& floats);
+
 // Returns a array of Java byte array converted from |v|.
 BASE_EXPORT ScopedJavaLocalRef<jobjectArray> ToJavaArrayOfByteArray(
     JNIEnv* env, const std::vector<std::string>& v);
 
 BASE_EXPORT ScopedJavaLocalRef<jobjectArray> ToJavaArrayOfStrings(
     JNIEnv* env,  const std::vector<std::string>& v);
 
 BASE_EXPORT ScopedJavaLocalRef<jobjectArray> ToJavaArrayOfStrings(
     JNIEnv* env,  const std::vector<string16>& v);
 
@@ skipping 53 matching lines @@
 // contents of |out| with the corresponding vectors of ints.
 BASE_EXPORT void JavaArrayOfIntArrayToIntVector(
     JNIEnv* env,
     jobjectArray array,
     std::vector<std::vector<int>>* out);
 
 }  // namespace android
 }  // namespace base
 
 #endif  // BASE_ANDROID_JNI_ARRAY_H_